Ultra Running Hub Corona, CA, United States · Friday, April 17, 2026
Timed 12 hours
RUN4Kids 12 Hour Race
Race completed
not publishedn/a Distance
not publishedn/a 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 ~8 Tiny. You will run alone for most of it.
DUV results for the 2026 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, April
Daytime high 22°C
Night low 8°C
Rainfall Dry — rain unlikely
Daylight 13 h 04 m of light
Regional 2001-2020 average for April — NASA POWER, grid elevation 628 m. Not a forecast.
The Aid Station
Course-specific beta from the community
With road terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for this road race.
- Trail Running ShoesCushioning on road 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
The course is flat, except for a little 20 foot or so grade in one location of the 1/2 mile track.
Similar races
Other road ultras of the same format.