Ultra Running Hub Fairbanks, AK, United States · Saturday, June 5, 2027
Alaska Endurance 6 Hour Trail Run
We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.
What the course asks
DUV results for the 2026 edition (6h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, June
Regional 2001-2020 average for June — NASA POWER, grid elevation 367 m. Not a forecast.
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for this trail race with 130 m of ascent.
- Trail Running ShoesCushioning on trail that is still there in the last quarter.
- Race NutritionSelf-supported fuelling between aid stations.
- Hydration VestsFlask capacity without the bounce.
- GPS WatchesBattery life first — an ultra outlasts most full-GPS modes.
Course Notes
The main AETR course consists of a roughly 6 mile loop on the trails of the University of Alaska Fairbanks (UAF) West Ridge. Official course lengths: Long loop – 6 miles, Short loop – 0.5 miles.
Similar races
Other trail ultras of the same format.