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

Timed 12 hours

New Years One Day 12 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 ~26 Small. Long stretches with nobody in sight.

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, 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	12h	26	Gang Qin · 114.553 km	Hilary Kyte · 83.009 km
2024	12h	20	Bob Hearn · 104.591 km	Erdenedalai Sangiragchaa · 94.629 km
2023	12h	16	Robert Kauss · 112.904 km	Linda Schultz-Lewis · 83.018 km
2022	12h	7	James Scanlan · 115.752 km	Caroline Roberts · 59.529 km
2021	12h	29	Yaz Saito · 107.504 km	Emi Yasaka · 114.102 km
2019	12h	36	Karl Schnaitter · 124.563 km	Nadia Stanis · 105.733 km
2019	12h	35	Charles Blakeney · 100.905 km	Sandra Villines · 97.526 km
2017	12h	31	Lucas Shuman · 102.837 km	Megan Storms · 102.837 km
2016	12h	20	David Czupryna · 107.986 km	Jennifer O'Connor · 101.066 km
2015	12h	43	Mark Richtman · 101.123 km	Noriko Bazeley · 89.125 km

The field grew 30% between 2024 (20) and 2025 (26). 35% of the 2025 field were women.

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.

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 12 h limit puts you out there after dark.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.