This is a huge week for trail & ultra! Here’s what you need to know:

We’re covering the 2025 Transvulcania Ultramarathon this week. Follow our live coverage, read women’s & men’s previews, & watch interviews!
Megan Eckert & Ivan Zaborsky set six-day world records last week. See our post-race interviews with Megan & Ivan.
Dan Green & Rachel Entrekin set big course records at this week’s Cocodona 250 Mile.

Hassan Ait Chaou

By Meghan Hicks Comments

An in-depth preview of the 2019 Transvulcania Ultramarathon.

By Bryon Powell Comments

A preview of the 2017 Zegama-Aizkorri Marathon.

By Justin Mock Comments

This Week In Running’s trail and ultra recap for September 6, 2016.

By Bryon Powell Comments

A video interview (with transcript) with Hassan Ait Chaou after his win at the 2016 The Rut 28k.

By Meghan Hicks Comments

Results from the 2016 The Rut 28k.

By Bryon Powell Comments

A preview of The Rut 28k.

By Mauricio Pagliacci Comments

An in-depth preview of the 2016 Zegama-Aizkorri Marathon.

By Ian Campbell Comments

Results from the 2015 Limone Extreme Skyrace.

By Meghan Hicks Comments

Results from the 2015 Zegama-Aizkorri Marathon.

By Bryon Powell Comments

An in-depth preview of the 2015 Zegama-Aizkorri Marathon.

By Meghan Hicks Comments

Results from the 2014 Matterhorn Ultraks 46k.

By Meghan Hicks Comments

An in-depth preview of the 2014 Matterhorn Ultraks 46k.

By Bryon Powell Comments

A preview of the 2014 Zegama-Aizkorri Marathon.