San Jose, CA, United States · Thursday, December 31, 2026

Timed 24 hours

New Years One Day 24 Hour Run

92 days away

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.

37.3394° N, 121.8950° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~28 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (24h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 13°C

Night low 4°C

Rainfall Showers likely

Daylight 9 h 37 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 233 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	24h	28	Daniel Chang · 164.362 km	Ayako Murai · 180.970 km
2024	24h	29	Samuel Cooper · 182.628 km	Zagdaa Baatar · 172.666 km
2023	24h	18	Daniel Chang · 175.998 km	Ayako Murai · 190.941 km
2022	24h	28	Larry Kadoyama · 143.863 km	Ayako Murai · 185.203 km
2021	24h	32	Russell Gong · 172.038 km	Megan Cheng · 145.484 km
2019	24h	58	Dylan Gallagher · 168.820 km	Asuka Eguchi · 194.408 km
2019	24h	41	Cesare Rotundo · 170.268 km	Megan Arauzo Kono · 193.443 km
2017	24h	56	Charles Blakeney · 186.820 km	Sarah Lavender Smith · 185.106 km
2016	24h	26	Michael Weston · 169.624 km	Ayako Murai · 171.395 km
2015	24h	28	Matt Collins · 193.676 km	Melissa Danehey · 167.967 km

The field has held steady: 29 in 2024, 28 in 2025. 46% of the 2025 field were women.

DUV results for the 2025 edition (24h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for this trail race.

Trail Running Shoes Cushioning on trail that is still there in the last quarter.
Race Nutrition Self-supported fuelling between aid stations.
Hydration Vests Flask capacity without the bounce.
Headlamps A 24 h limit puts you out there after dark.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.