Alaska Endurance Trail Run

JUN

5-6

2026

Run a trail ultramarathon on looped routes near UAF West Ridge amid the midnight sun. Choose a 6 hour, 12 hour or 24 hour solo challenge with aid stations and sweeping northern scenery.

5-6 Jun 2026

Fairbanks, Alaska

Website

6 Hour Trail Challenge 12 Hour Trail Challenge 24 Hour Trail Challenge

Always double-check with the organizer's website! This page may contain affiliate links.

Event overview

The Alaska Endurance Trail Run is a trail ultramarathon held in Interior Alaska. The 2026 edition is scheduled for June 5 to June 6 and will be the 10th running of the event. The race is a member event of the Road Runners Club of America and lists local businesses as sponsors, including a restaurant and a bakery.

The event is organized as a multi-hour trail challenge for individual participants. It takes place on trails near the University of Alaska Fairbanks West Ridge area. The timing in early June places the event during the period of the midnight sun.

Course and format

The event uses looped trails on the UAF West Ridge system and offers support features such as aid stations and published race rules. The event is open to both runners and walkers as individual entrants.

Distances and formats:

6-hour trail challenge
12-hour trail challenge
24-hour trail challenge

Results, reports, and past entry lists are maintained for previous years. Registration and additional race information are provided by the event organizers. Visit the organization's website for the most recent information.

24 hr

24 Hour Trail Challenge

12 hr

12 Hour Trail Challenge

6 hr

6 Hour Trail Challenge