Courtney Olsen Sets 50-Mile World Record of 5:31:56 at the 2024 Tunnel Hill 50 Mile

Courtney Olsen set a new 50-mile world record in 5:31:56 (to be confirmed) at the 2024 Tunnel Hill 50 Mile in Illinois.

By on November 9, 2024 | Comments

American Courtney Olsen continues to make her mark on ultrarunning history, this time provisionally setting a women’s 50-mile world record of 5:31:56 at the Tunnel Hill 50 Mile in Vienna, Illinois, on November 9, 2024.

The previous record of 5:40:18 was set in 1991 by the iconic American ultrarunner Ann Trason. Olsen’s effort resets the world record by 8 minutes and 22 seconds.

Her performance represents an average pace of 6:39 per mile (4:08 per kilometer) over 50 miles (80.47 kilometers). Wow!

See also our in-depth interview with Courtney Olsen, conducted a few days after the race.

Courtney Olsen - womens 50 mile world record - 2024 Tunnel Hill 50 Mile

Courtney Olsen crossing the line to set a new women’s 50-mile world record at the 2024 Tunnel Hill 50 Mile. Photo: Micki Colson, Colson Photography

The Tunnel Hill 50 Mile is run as a double out-and-back on the Tunnel Hill State Trail, a rails-to-trails trail composed mostly of crushed limestone. The event and trail are named after the tunnel through which the trail passes and was the location of a new men’s 50-mile world record in 2023. It is a USA Track & Field-certified course, and the event has an International Association of Ultrarunners (IAU) Gold Label. The IAU governs the 50-mile distance for world records, and will be responsible for ratifying the record.

The 37-year-old hails from Bellingham, Washington, and appears to be amidst a big year in racing. Earlier in 2024, she took third at the Comrades Marathon. She’s also on Team USA, set to compete at the IAU 100-Kilometer World Championships in December, 2024. In 2022, the last time the 100k world champs took place, Olsen finished fourth and ran 7 hours and 15 minutes. Her marathon PR appears to be 2:36:21.

Full results.

Meghan Hicks

Meghan Hicks is the Editor-in-Chief of iRunFar. She’s been running since she was 13 years old, and writing and editing about the sport for around 15 years. She served as iRunFar’s Managing Editor from 2013 through mid-2023, when she stepped into the role of Editor-in-Chief. Aside from iRunFar, Meghan has worked in communications and education in several of America’s national parks, was a contributing editor for Trail Runner magazine, and served as a columnist at Marathon & Beyond. She’s the co-author of Where the Road Ends: A Guide to Trail Running with Bryon Powell. She won the 2013 Marathon des Sables, finished on the podium of the Hardrock 100 Mile in 2021, and has previously set fastest known times on the Nolan’s 14 mountain running route in 2016 and 2020. Based part-time in Moab, Utah and Silverton, Colorado, Meghan also enjoys reading, biking, backpacking, and watching sunsets.