Ultra Running Hub Seattle, WA, United States · Saturday, October 24, 2026
Timed 12 hours
Carkeek 12 Hour
38 days away
not publishedn/a Distance
131 m Climbing
not publishedn/a Grit
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
Field size ~15 Tiny. You will run alone for most of it.
DUV results for the 2025 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, October
Daytime high 15°C
Night low 7°C
Rainfall Showers likely
Daylight 10 h 27 m of light
Regional 2001-2020 average for October — NASA POWER, grid elevation 110 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 131 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.
- HeadlampsA 12 h limit puts you out there after dark.
- GPS WatchesBattery life first — an ultra outlasts most full-GPS modes.
Course Notes
1.93 miles/loop in the Carkeek Park
Similar races
Other trail ultras of the same format.