Ultra Running Hub San Jose, California, United States · Saturday, June 6, 2026
Mt. Umunhum Ultras - 50 km
Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.
What the course asks
DUV results for the 2025 edition (50km) — finishers 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 233 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50km | 5 | Hendrik Melse · 05:47:53 | Elizabeth Prosser · 06:42:35 |
| 2024 | 50km | 6 | Dmitriy Kernasovskiy · 06:48:48 | Jamie Zumaran · 07:08:27 |
| 2023 | 50km | 14 | Joshua Hanley · 05:44:00 | Cynthie Cuno · 06:41:00 |
| 2022 | 100mi | 5 | Charles Keller · 30:34:42 | Joanna Richardson · 25:19:41 |
The field shrank 17% between 2024 (6) and 2025 (5). 20% of the 2025 field were women.
DUV results for the 2025 edition (50km) — finishers 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
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail.
- Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 50 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 50 km, without the bounce.
- GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
Similar races
Other 50K trail ultras, closest in distance first.