Best Running Headlamps of 2026

For most trail runners, a headlamp is an essential piece of gear, especially during the winter months when the days are short and many of us find ourselves running before the sun comes up and after it goes down. Whether out training, racing through the night during an ultra, or going on a fastpacking trip where you need a light for camp, a reliable headlamp can make the difference between an adventurous jaunt and stumbling down a dark trail. Fortunately, there are many great headlamp options on the market, and this guide can help you choose the best running headlamp for your needs and budget.

During the research phase, we compared battery life, brightness settings, weight, and comfort of different headlamps. We then selected the top contenders for illuminating everyday trail runs, road runs, and ultra-distance runs. Our testing team then took these headlamps and waist lights out for sunrise runs, 100-mile races, and multi-day fastpacking outings to test their performance.

In the end, we rounded up the best headlamps for running, ranking our top picks according to a few key categories. We chose the Petzl Iko Core as our overall favorite and the Petzl Nao RL as our top headlamp for ultras. We also loved the Nitecore UT27 MCT Pro for daily trail running, and we appreciated the Black Diamond Sprinter 500 and its rear blinking red light for enhanced visibility on roads.

For more background information, see our buying advice, testing methodology, and frequently asked questions below our picks.

[Editor’s Note: Updated April 20, 2026 to reclassify the Petzl Iko Core as the best overall headlamp and the Nitecore NU25 MCT UL as the best value headlamp among other classification updated as well as add the Black Diamond Sprinter 500 as the best road running headlamp. Prices and availability also verified.]

Best Running Headlamps

• Best Overall Running Headlamp: Petzl Iko Core
• Best Road Running Headlamp: Black Diamond Sprinter 500
• Best Trail Running Headlamp: Nitecore UT27 MCT Pro
• Best Headlamp for Ultrarunning: Petzl Nao RL
• Best Waistlight for Running: UltrAspire Lumen 600 5.0 Waist Light
• Best Value Headlamp for Running: Nitecore NU25 MCT UL
• Best Emergency Running Headlamp: Petzl Bindi

Best Overall Running Headlamp: Petzl Iko Core ($105)

Pros:

• Comfortable
• Lightweight
• Accepts AAA batteries in addition to the included rechargeable battery

Cons:

• The battery pack is awkward to change out

The Petzl Iko Core is our top pick among the best headlamps for running. We love its balance of lighting technology, weight, and comfort. Although brighter lights and longer battery life used to commonly come with compromises in weight and comfort, Petzl made no such compromises here.

This headlamp emits 500 lumens of clean, cool light with two lighting beam options — flood or mixed — and three lighting levels. Our testers found that the middle setting of 100 lumens was plenty for running at night, but we appreciated the 500-lumen setting when the trail got technical. Petzl claims that on the 500-lumen setting, this light would work for 2.5 hours, enough for most of our dark runs.

The head harness of this light made it stand out from the competition. The silicone band was exceptionally comfortable and held the battery cradle easily, and we couldn’t even feel the LED panel on the front. When we tightened it down on our head, it never felt like there were any pressure points, and even when a bit loose, it never felt like it was bouncing around. If you’re someone who gets headaches while wearing a headlamp, this could be a great option for you.

While it looks cumbersome, the harness folds up for storage, so you can easily fit the headlamp into a pocket on your pack when you don’t need it. It’s not great in a pocket, though. Finally, this headlamp weighs less than 2.9 ounces, making it sufficiently lightweight for a trail runner’s needs.

Our only complaint with this headlamp is that changing the battery during an all-night run can be fiddly, especially when cold and sleep-deprived.

Be sure to check out our in-depth Petzl Iko Core review.

Actual Weight: 2.8 ounces (80 grams) | Maximum Light Output: 500 lumens | Battery Source(s): 1,250-mAh Petzl Core rechargeable (included) or 3 AAA

Shop the Petzl Iko Core

Best Road Running Headlamp: Black Diamond Sprinter 500 Headlamp ($100)

Pros:

• Versatile light for roads and trails
• Reflective logos and rear flashing light enhance visibility
• Top strap is removable

Cons:

• Not suitable for a full night out

The Black Diamond Sprinter 500 Headlamp has become an all-around favorite among iRunFar’s testing team, and it’s an especially great pick for runners who spend their miles on both dark roads and trails. This headlamp emits a maximum of 500 lumens, with a single button to toggle through three brightness settings, and it runs three to four hours at its max setting.

We love this light for road running because, in addition to its bright front light, it has reflective accents on the strap and a rear flashing red light to help runners remain visible to vehicles in every direction. Take a look at our best reflective running gear guide to find more ideas for staying visible while running.

Aside from providing bright light and enhanced visibility to others, the Sprinter is also comfortable for hours at a time, and its top strap can be easily removed if you prefer. Although the relatively short runtime is not suitable for a full night out, especially on trails where you’ll want the brighter setting, you can solve this limitation by carrying extra batteries. The Sprinter takes three AAA alkaline batteries or a rechargeable lithium-ion battery that charges via USB-C, and you can also purchase additional battery packs for $40.

Actual Weight: 4.0 ounces (114 grams) | Maximum Light Output: 500 lumens | Battery Source(s): BD1800 Li-ion rechargeable battery or 3 AAA

Shop the Black Diamond Sprinter 500

Best Trail Running Headlamp: Nitecore UT27 MCT Pro ($60)

Pros:

• The warm light option is easy on the eyes
• Lightweight
• The battery is easy to swap
• The locking mechanism keeps it from accidentally turning on

Cons:

• Battery life won’t get through an entire night on the medium setting

The Nitecore UT27 MCT Pro is a great headlamp for a few hours of running in the dark, offering plenty of light without much weight. At $60, it’s also significantly less expensive than many of the other headlamps on this list while still offering exceptional performance. It’s small and light enough at 2.6 ounces to stow in any running vest. The “Pro” configuration comes with two batteries, while the non-Pro version comes with a single battery and costs $5 less. In our opinion, it’s never a bad idea to have a spare battery on hand.

This headlamp’s warm setting is more yellow than the harsher white light most other headlamps emit, and it feels easier on the eyes after multiple hours of use. Its other two settings are neutral white and cool white.

Nitecore claims the battery will last for 3.5 hours at 500 lumens and 6.5 hours at 280 lumens, both levels providing plenty of light to run trails. The company also claims the white light setting offers up to 800 lumens for 2.5 hours if you want to really light up the night.

Nitecore claims that the 100-lumen low-light setting offers 14.5 hours of illumination in any of the three colors. There is also a red light that you can use for nighttime chores if you’re using this headlamp for fastpacking or camping.

While this headlamp doesn’t have enough power for a full night of reasonably illuminated trail running on a single battery, swapping out the battery in the field is easy. A fun feature is that the battery compartment glows in the dark, making it easy to insert a new battery if you have no other light source.

It’s possible to swap the Li-ion rechargeable battery for three AAA batteries, which will give you a slightly lower run time than the rechargeable one. We appreciate the built-in battery indicator. Keeping track of the approximate remaining run time helps us decide what brightness level to use.

This light provides up to 100 degrees of illumination in front of you, which is plenty wide for navigating peripheral obstacles. It can also throw a beam 183 meters on its 800-lumen mode. This is an excellent option if you’ve lost the trail or need to spot a landmark in the distance.

The button on top is easy to use, even when you’re tired or have cold fingers. Holding down the right side of the button gives you a yellow light, and the left gives you a white light. Then, single presses of the button toggle through the four different brightness settings.

The simple headband is comfortable enough and easy to adjust if you add or subtract layers from your head. It has a small silicone band on the inside to help keep it in place, and reflective hits on the outside provide additional visibility if running on the roads. The light sits on a 90-degree swivel so that you can point it in just about any direction.

Actual Weight: 2.6 ounces (75 grams) | Maximum Light Output: 800 lumens | Battery Source: 1,500-mAh rechargeable (included) or 3 AAA

Shop the Nitecore UT27 MCT Pro

Best Headlamp for Ultrarunning: Petzl Nao RL ($200)

Pros:

• Reactive Lighting system automatically adapts to changing light needs
• The battery will last through the night
• It is relatively easy to change out the battery

Cons:

• Not our top choice for comfort
• Pricey

The Petzl Nao RL is the updated version of the Petzl Nao+, which was the go-to ultrarunning headlamp for a half decade. As with its predecessor, this headlamp has a lot going on — mostly in a good way.

The Nao RL features both regular and Reactive Lighting settings. The Reactive Lighting setting automatically adapts the beam’s brightness and focus to the terrain. The beam will be dimmer and wider for close-range vision and brighter and more focused for far-range vision. This can extend battery life by dimming the bulb when there’s less need for full power. The Reactive Lighting setting can be a slight nuisance if you are frequently looking between the ground and the surrounding terrain, as it will continually dim and brighten in response to any reflected light, and the lag is noticeable.

We like that this light has a rear-facing red light to keep you visible to approaching cars or other runners. It can illuminate as a solid red light or a strobe, and you can control it independently from the front light. The reflective headband also increases your visibility to others. This makes it an excellent choice for folks who regularly run on streets where nighttime visibility is paramount for safety.

In its standard (non-reactive) setting, Petzl claims this headlamp will put out 250 lumens for 5 hours. With our testers keeping the settings medium-to-low, this headlamp’s battery lasted through 8–11-hour nights during 100-mile races.

When it comes to the battery, the whole package is not ultralight, but one battery will give you an entire night of decently lit trail running. Still, if you’ve got a spare battery, it can’t hurt to make a 3 a.m. battery swap to make the last hour or so of darkness a little brighter. On that note, switching batteries in the field is a relatively easy, two-step process.

This headlamp does have a couple of downsides. Its comfort is not amazing, especially if your hair is in a ponytail. We recommend a buff or backward cap under it for a full night of running. Also, it’s expensive. That said, this is our favorite option if you’re looking for a headlamp with Reactive Lighting or one you can trust for all-night runs.

Be sure to check out our in-depth Petzl Nao RL review to learn more.

Actual Weight: 5.2 ounces (146 grams) | Maximum Light Output: 1,500 lumens | Battery Source(s): 3,200-mAh rechargeable (included)

Shop the Petzl Nao RL

Best Waistlight for Running: UltrAspire Lumen 600 5.0 ($140)

Pros:

• Great for lighting technical trails
• Comfortable and non-bouncy

Cons:

• Heavy and bulky

There are many reasons to opt for a waist-worn lighting option, and for years, the UltrAspire Lumen 600 Waist Light has been among our favorites. To be fair, we haven’t tested the latest version of this light – the 5.0 – yet, but we have put countless hours and miles on the earlier 3.0 and 4.0 models.

A waistlight adds visibility and safety when running on dark roads and enhances lighting on dark trails. It’s also a great alternative for those who don’t like wearing a headlamp. When you power on this light, you get 600 lumens, which is its brightest setting. You can then toggle through medium and low light settings, where you’ll find the longer end of its 6-14 hour battery run time. The battery is rechargeable, but if you want to use this light on its brightest setting for a full night, you can purchase an inexpensive extra 18650 battery and easily swap it out. There’s an indicator light near the power button that indicates the remaining amount of battery life.

The Lumen 600 emits a wide cone of evenly distributed light, and since it sits lower on your body, it is incredibly effective at lighting up technical trails. Some of our testers liked combining this light with a headlamp during overnight ultras, and one tester preferred this light for stormy pre-dawn backcountry ski missions. Other testers have opted for similar waistlights from UltrAspire, including the super-bright Lumen 850 Duo Waist Light ($170) and the more budget-friendly, but still plenty bright, Lumen 400z 3.0 Waist Light ($100). Each of these models offers slightly different features (and weights), so it’s worth exploring them to see which might best meet your needs. Although the lower abdomen can feel delicate during the nighttime portion of an ultra, none of our testers reported any issues or discomfort while wearing this waistlight.

Although this light is much heavier and bulkier than a traditional headlamp, it’s a great tool to have in your kit. We’ve also included the Lumen 600 in our best reflective running gear guide.

Claimed Weight: 7 ounces (198 grams) | Maximum Light Output: 600 lumens | Battery Source: 18650 rechargeable battery (included)

Shop the UltrAspire Lumen 600 5.0 Waist Light

Best Value Headlamp for Running: Nitecore NU25 MCT UL ($37)

Pros:

• Weighs less than 2 ounces
• Good backup headlamp option

Cons:

• We don’t love the aesthetic

The Nitecore NU25 MCT UL might be the niftiest little headlamp you didn’t know existed — or that you needed. But if you’re someone who has gotten caught out in the dark during a run that’s gone a little too long and wished you had something other than your phone to light your way back home, you’ll appreciate this little light. With a very reasonable price, there’s no reason not to keep it permanently stowed in your hydration vest.

This headlamp is an upgraded version of the original Nitecore NU25. We learned about this light through the thru-hiking community, which has known about this gem for a long time. This newest version not only has a bigger battery, but it also comes with three different light colors, including warm light, which we appreciate for long runs in the dark.

What hasn’t changed about this headlamp is its small and light design. Weighing under two ounces, this is a great backup or simple ultralight headlamp if you’re counting grams. It is a powerhouse of light for its weight, providing 400 lumens at its highest setting. Its 200-lumen setting is sufficient for a couple of hours of trail running, as long as the trail isn’t super technical. The dim settings allow you to do chores around your campsite while consuming almost no battery power. The built-in rechargeable battery plugs in with a USB-C cord.

Our only complaint with this headlamp is its aesthetic. We can hardly ding something so wonderful just on looks, but it does remind us of a kid’s toy headlamp.

Actual Weight: 1.6 ounces (46 grams) | Maximum Light Output: 400 lumens | Battery Source(s): 700-mAh rechargeable (included)

Shop the Nitecore NU25 MCT UL

Best Emergency Running Headlamp: Petzl Bindi ($50)

Pros:

• Great backup light
• Ultralight
• Comfortable

Cons:

• Not bright enough for technical trails
• Soon to be discontinued

The small and sleek Petzl Bindi is an excellent backup headlamp to keep stashed in your hydration pack or running belt for those times you either forget your regular light or forgot to charge it. Tiny and compact, this headlamp weighs barely more than an ounce, and it’s so comfortable that you could easily forget you’re wearing it. Despite its small size, it can still put out 200 lumens, and it’s telling that many racers at the 2025 Trail World Championships Long Trail were wearing it for the initial 45 minutes of darkness.

It’s shaped to fit the forehead and is a cinch to adjust, literally. The light has three modes and can be tilted up or down to light the trail ahead. It’s rechargeable via a micro-USB port on the side, and a green light indicates when it’s fully charged. A lock switch keeps it from turning on accidentally in your pack. For a tiny little light, it has a lot going on.

Of course, the primary downside of the Bindi is that its brightness tops out at 200 lumens, and most runners want more light for extended nighttime running, especially on technical terrain. But it’s hard to beat as a backup light or for someone looking to shave weight. It’s also great for digging through your car or hydration vest for spare gloves at the trailhead or keeping in your tent for nighttime bathroom breaks during fastpacking trips.

Unfortunately, this fantastic little light is being discontinued, but we’re keeping it in our guide for now, since it is still available for purchase. We’re constantly testing headlamps and will update our top pick for this category the next time we update this guide.

Actual Weight: 1.2 ounces (35 grams) | Maximum Light Output: 200 lumens | Battery Source(s): 680-mAh rechargeable (included)

Shop the Petzl Bindi

While you can still pick up the Petzl Bindi, it’s on its way out — and we don’t hesitate to recommend its successor, the Petzl Swift LT. We’re testing the Swift LT and will share a full assessment soon.

Shop the Petzl Swift LT

Comparing the Best Running Headlamps

HEADLAMP / LIGHT	PRICE	MAX LIGHT OUTPUT	BEAM DISTANCE
Petzl Iko Core	$105	500 lumens	100 meters
Black Diamond Sprinter 500	$100	500 lumens	50 meters
Nitecore UT27 MCT Pro	$60	800 lumens	168 meters
Petzl Nao RL	$200	1,500 lumens	200 meters
UltrAspire Lumen 600 5.0 Waist Light	$140	600 lumens	135 meters
Nitecore NU25 MCT UL	$37	400 lumens	132 meters
Petzl Bindi	$50	200 lumens	36 meters

Buyer’s Guide: How to Choose a Running Headlamp

Brightness

For many runners, brightness is the top consideration when choosing between the best running headlamps on the market. However, it’s worth noting that brighter is not necessarily better. Both too much and too little light can cause eye strain over the long run. A better approach is to determine the right brightness level for your needs.

Timothy Gorbold, a headlamp product design engineer and veteran ultrarunner, put it this way: “Ideal brightness is a perfect ‘Well, it depends’ question. Generally, 300 lumens with the ability to adjust up to 500 or 800 lumens is a solid compromise between lighting the surroundings, creating the shadows needed for confident foot placement, and headlamp runtime.”

Some other factors worth considering when thinking about your ideal headlamp brightness include how long you’ll use the light (for an hour before dawn or through an entire night), what type of terrain you’ll be running (technical versus non-technical), how fast you’ll be moving, and the weather.

In most situations, we love the Petzl Nao RL Reactive Lighting setting, which automatically optimizes brightness according to estimated need.

Type of Light

Headlamps with multiple light settings usually offer two types of lighting: flood and long-throw. Some headlamps have a combination of the two. Floodlighting casts a broad cone of light over a shorter distance and is ideal for digging something out of your pack, reading a map, or setting up camp in the dark. The human eyes can see in about a 100-degree cone in front of the face, and most floodlighting illuminates that area.

Long-throw light, also called a spotlight, is the most common type of lighting used on the trail. It casts a narrower beam out in front of you, lighting up the trail ahead at the expense of your peripheral vision. Many runners appreciate having access to both types of lighting at once to help reduce strain on their eyes during the long, dark hours of the night.

Having enough light on the trail directly ahead will be most important for runners, though having multiple light options is a bonus. Fortunately, most headlamps nowadays offer both types of lighting, and some — like the Petzl Iko Core — also have a setting that simultaneously provides both flood and long-throw light. This will drain your battery quickly if used all the time, but could come in handy if you lose sight of the trail in the dark or are navigating off-trail and need all the help you can get.

Some newer headlamps feature both warm and white light. The warm light, such as that found on the Nitecore UT27 MCT Pro, can feel less harsh on long runs than the traditional white light used by most headlamps.

Type of Battery

Headlamps generally use rechargeable batteries or AAA or AA batteries. We reviewed only rechargeable headlamps in this guide, many of which are also compatible with AAA batteries. There are wide varieties of rechargeable batteries, including Petzl’s proprietary Core rechargeable battery and the 18650 lithium-ion rechargeable battery found in many of the headlamps above. The 18650 battery is used across many industries, and is popular for its low cost, reliability, energy density-to-weight ratio, and ability to recharge many times. While none made it into this guide, the larger 21700 battery is commonly used in more powerful headlamps.

Generally, we recommend choosing a headlamp with a rechargeable battery since it’s more efficient, convenient, and better for the environment. Some headlamps, like the Nitecore UT27 MCT Pro and Black Diamond Sprinter 500, can either run off their included rechargeable battery or AAA batteries.

This is ideal for situations where you may not have access to an outlet or battery bank to charge your headlamp. Carrying spare AA or AAA batteries in your pack is often easier and lighter than making sure you always have a charged power bank in your pack.

Battery Life

Battery life is one of the most important considerations when choosing a headlamp. The best running headlamp is the one that won’t unexpectedly die on you. No one wants to be stuck on a ridgeline or descend a steep scree slope with a headlamp that’s out of juice. Because most members of the iRunFar team have been in this situation, we recommend carrying a backup light, like the Petzl Bindi, even if you think your light is fully charged and ready to go. Alternately, you can throw a few AA or AAA batteries in your pack if your rechargeable headlamp accepts them.

Gorbold, a design engineer who’s developed lighting solutions for outdoor adventures, says there’s good news on the lighting technology front. He shares, “The recent advancements in both LED components and control circuit technology have revolutionized the efficiency and reliability of headlamps. The LED (light-emitting diode) efficiency has dramatically improved over the last decade, at an increase of about four lumens/watt every year, and now averages about 100 lumens/watt. This means that less battery is needed to produce the same amount of light output.”

Continuing, Gorbold explains, “Additionally, a lot of work has been done to refine the LED driver circuitry, which now includes functionality like switching and current regulation that both prolong the runtime of the LED light and make the light output more consistent over time as the battery starts to drain.” In summary, modern LED lights are more efficient and consistent than ever before.

Some advanced lamps, such as the Petzl Nao RL, have Reactive Lighting technology that senses reflected light and adjusts the brightness accordingly. This helps optimize battery life while providing enough light to see.

When choosing a headlamp, you’ll want to consider how long you normally run in the dark and if you need a headlamp to get you through an entire night. Most headlamps have batteries that are easy to swap out on the go, so you can run them at a higher brightness setting and put a new battery in halfway through the night if needed.

Fit and Comfort

As something you will wear on your head, potentially for hours at a time, a headlamp should be comfortable. You’ll want to make sure the strap has enough padding and that the mount unit doesn’t dig into your forehead when you tighten everything down. A tight headlamp can cause headaches and divots in your forehead.

You’ll also want a strap that won’t snare your hair and is easy to adjust on the move. We found the head harness of the Petzl Iko Core was incredibly comfortable and didn’t require us to tighten it too much to stay stable.

As a veteran ultrarunner and lighting engineer, Gorbold shares his strategy for lighting his runs. “For overnight ultra runs, I always use a headlamp with an over-the-top strap and remote battery so that I can relax the tightness of the straps just a little and still have good light stability when running.”

We recommend playing around with the fit of your headlamp to figure out what works best for you, especially if you plan to use your headlamp through an entire night during an ultra.

“It’s like sunglasses that pinch just a little too tightly over my ears,” Gorbold says of a poorly fitting headlamp. “It feels fine for an hour, but six hours later, I’ll have a headache.”

Some headlamps use a soft, sweat-wicking material for the band, while others use minimalistic cord-like structures. Lighter straps, like those on the Petzl Bindi, may appeal to the gram counters, but they also hold the headlamp less securely, and you may end up with a bouncing beam of light as you run down the trail. This can cause eye fatigue as the hours rack up. If you are using the light in the winter or for a more technical outing, look for one that will be comfortable over a running hat or beanie.

Portability

Whether you’re looking for a headlamp that will always live in your pack as a just-in-case option or one that you can use regularly for morning and evening runs, you’ll want one that is easy to carry. Headlamps like the Petzl Bindi with minimalist straps fit the most easily into hydration vest pockets but often compromise on fit, comfort, and stability. Among the options with robust strap designs, we found that the Petzl Iko Core will fold up and fit easily into a running vest.

There are situations where you’ll want or need to carry a backup headlamp, like during a long ultra with many hours of running at night or during a race that requires a second headlamp as part of a mandatory gear kit. The small size and bright light output of the Nitecore NU25 MCT UL make it a great headlamp option, especially if you don’t anticipate using it regularly.

In general, it’s also a good idea to have a backup light source in your pack whenever you head out into the backcountry.

Weight

While it may seem that the slight differences in weight between headlamps won’t make a difference, remember that you’re carrying that weight on your head. Over many hours of concentrating on the trail, even a tiny amount of extra weight can add additional strain on your neck.

The distribution of the headlamp’s weight is also important. Too much weight on the front of a headlamp can make it uncomfortable for long runs. The Petzl Iko Core is not only an incredibly light headlamp, but the weight is distributed between the front and back, making it even more comfortable.

While getting the lightest headlamp possible may be tempting, you’ll compromise on brightness and battery life. Much of a headlamp’s weight comes from the battery, so you’ll want to think carefully about how much light and run time you need and then consider weight after you’ve decided on those factors.

Why You Should Trust Us

At iRunFar, we run in all conditions throughout all months of the year, which often includes running in the dark during 100-mile races, multi-day fastpack adventures, or during pre-dawn or post-dark times. Our testers have experience running on their local trails in the dark and at premier long-distance races like the Hardrock 100, UTMB, and Tor des Géants, where it’s common for some finishers to endure more than one dark night on the trail.

Our extensive testing process ensures you get the best headlamp for running for your money, and more importantly, the right headlamp for your specific needs. As ultra-long-distance runs and races have become more mainstream — think 200-mile events — battery life has become even more important. Even if you’re not racing through the dark but running regularly in the mornings and evenings, you’ll want a high-quality headlamp that you can trust not to go dark on you.

For this guide, we’ve identified both heritage brands and new innovative companies bringing light to the trail, and we put each of the lights above through the paces — testing their durability, versatility, fit, and battery life.

We also consulted Timothy Gorbold, a Product Design Engineer who has researched and developed lighting solutions. Timothy is a semi-retired ultra-endurance racer and lifetime adventurer with three decades of technical product design and development experience. He is passionate about performance gear. His company, Backstitch, Inc., develops outdoor-inspired products to help people experience nature.

Frequently Asked Questions About Running Headlamps

What is a lumen?

A lumen is the International System of Units (SI) unit for the “luminous flux,” or the perceived power of light. In runner terms, this tells us how bright a headlamp is. In general, the brighter the light, the further you can see onto the trail, though there are differences depending on how the headlamp disperses the amount of light — whether in flood mode or spotlight mode.

Most modern lights have multiple brightness settings, and we recommend having 200 to 300 lumens for trail running. You won’t need as many lumens if running on roads with fewer obstacles. The Petzl Iko Core maxes out at 500 lumens, which is plenty for most trail running applications, and the Nitecore UT27 MCT Pro offers 800 lumens in its turbo mode. These extra-bright settings can help you spot landmarks in the distance, but as lumens increase, power usage also increases, and battery run time drops. Thus, there’s a fine line between having a bright light that will run long enough and carrying a heavy battery on your head.

As runners, we want a headlamp bright enough to illuminate rocks and other terrain features underfoot. However, we also want enough battery power to last until we get where we’re going — whether back to the trailhead or through the entire night. We also don’t want our headlamps to weigh too much. Therefore, we always seek the right balance to meet our specific needs.

For everyday running on roads and trails, when you may only need a few hours of light at a time, and you might also need to be visible to others, we love the Black Diamond Sprinter 500. It provides plenty of light at a low weight and also features a rear light. When we need a headlamp that shines brightly through the night, our top pick is the Petzl Nao RL.

How bright should my headlamp be for trail running?

The ideal headlamp brightness for trail running depends on multiple factors, but 200 to 300 lumens is a good starting point. The Nitecore UT27 MCT Pro provides up to 800 lumens, while the Petzl Bindi maxes out at 200 lumens.

Timothy Gorbold, a product design engineer with decades of experience in ultrarunning and ultra-distance orienteering events, recommends choosing a lamp with 300 lumens that adjusts up to 500 or 800 lumens for technical trails, poor weather, or extra-dark forests.

To help you decide on the best running headlamp, Gorbold poses the following questions: “What are the conditions you’re anticipating on your run: open terrain, any ambient or moonlight, forested trails, rough roots and rocks, smooth rolling, stormy rain, fog, winter snow, singletrack, forest roads? Also, what is your confidence and comfort level, running speed, and duration of run?” All of these factors can help steer you toward the best light for your needs.

More light, up to a point, will help you move faster, especially over technical terrain. Our testers found that the Petzl Iko Core provided the right amount of light for running on most trails while still being light and comfortable.

What types of batteries do headlamps use?

Most headlamps use rechargeable battery packs, standard-sized rechargeable batteries like 18650 or 21700 cells, or AA or AAA batteries. Some, like the Nitecore UT27 MCT Pro, can run on either a proprietary battery pack or AAA batteries. This versatility makes it easy to swap out batteries on the go. Many Petzl lights, including the Petzl Iko Core, use a proprietary rechargeable battery. Rechargeable batteries can be more environmentally friendly than running through potentially dozens, if not hundreds, of disposable batteries over the lifespan of a headlamp.

The other advantage of a headlamp with a rechargeable battery is that you can always start a long night run with a full charge without wondering how much power a set of disposable batteries has left.

Most rechargeable batteries can have enough charge cycles that you don’t have to worry about decreased performance over time. All headlamps with rechargeable batteries in this guide are charged with some sort of USB cable and will charge from empty to full within a few hours.

What are the different modes of headlamps?

Most headlamps have a few general modes: a constant or flashing white light and a constant or flashing red light. Some, like the Nitecore UT27 MCT Pro, have a warm-light mode as well. More complex lamps allow for more adjustments, including beam width. Petzl’s Reactive Lighting technology — featured on the Petzl Nao RL — adjusts the brightness of the light automatically depending on the amount of ambient light available.

My head starts to hurt when wearing a headlamp all night. How can I make it more comfortable?

If your headlamp is consistently causing discomfort after a few hours, you can try a few things. One is adding a layer of fabric underneath your headlamp band. A soft layer of fabric can help reduce the band’s pressure against your head and keep it from making imprints on your forehead.

A second option is to choose a headlamp with more than one strap, such as the Black Diamond Sprinter 500, to help disperse the pressure. Similarly, trying a lighter headlamp or one with a battery pack on the back, such as the Petzl Iko Core, might also alleviate discomfort. Finally, you might opt for a waistlight, like the UltrAspire Lumen 600 5.0, and avoid wearing anything on your head at all.

Do I need both a front and rear light?

If you frequently run on roads in the dark, a rear-facing light can help cars see you. Some headlamps, like the Black Diamond Sprinter 500 and Petzl Nao RL, have a built-in red light on the head strap. Some runners use a waist light, such as the UltrAspire Lumen 600 5.0, in addition to a headlamp, to make their presence known to other trail users.

My headlamp battery ran out on the trail. How do I prevent this from happening next time?

The best way to avoid getting caught in the dark is to carry spare batteries, a fully charged backup headlamp, or both. We also recommend regularly charging your everyday headlamp and topping it off before any big adventures that will begin or end in darkness.

It’s also important to take precautions to prevent your headlamp from accidentally turning on in your pack and depleting the battery. Many headlamps, including the Black Diamond Sprinter 500 and Nitecore UT27 MCT Pro, have a locking mechanism – often via holding a key combination – to prevent this.

If you’re worried about your headlamp’s power level, keeping it on the lowest adequate brightness setting will help extend its run time. However, if you run out of battery on the trail, you’ll appreciate having a small backup light, like the Nitecore NU25 MCT UL or Petzl Bindi, to get you back to the trailhead.

Unfortunately, we’ve yet to obtain and test the Light of Eärendil, “a light for you in dark places when all other lights go out.” So, keep your batteries charged and a backup light on hand!

Call for Comments

• What’s your favorite running headlamp?
• Trail runners, what headlamp do you use the most on the trails?
• What is your prized running headlamp for all-night ultrarunning?

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