Ultra Running Hub Woodside, CA, United States · Sunday, January 17, 2027
Crystal Springs 50 km Winter Trail Run
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 2026 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, January
Regional 2001-2020 average for January — NASA POWER, grid elevation 66 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50km | 30 | Jeffrey Clark · 04:56:37 | Ananya Ramkumar · 04:26:31 |
| 2025 | 50km | 25 | Matthew Collins · 03:59:08 | Rebecca Johnson · 04:41:41 |
| 2024 | 50km | 46 | Nathan Seltenrich · 04:22:40 | Jessie Brewer · 05:58:23 |
| 2022 | 50km | 43 | Nicholas Allen · 04:11:48 | Ashley Gilbert · 05:16:10 |
| 2020 | 50km | 41 | Benjamin Willis · 04:39:06 | Kristina Randrup · 04:31:00 |
| 2019 | 50km | 55 | Chris Thoburn · 04:00:44 | Lily Helzer · 05:35:39 |
| 2018 | 50km | 41 | Robert Ressl-Moyer · 03:48:06 | Penelope MacPhail · 04:52:04 |
| 2017 | 50km | 39 | Robert Ressl-Moyer · 03:55:07 | Penelope MacPhail · 04:59:20 |
| 2016 | 50km | 37 | Phil Shaw · 04:04:36 | Tina Shinn · 05:40:10 |
| 2015 | 50km | 55 | Ian Sharman · 03:44:38 | Jennifer Pfeifer · 04:39:51 |
The field grew 20% between 2025 (25) and 2026 (30). 33% of the 2026 field were women.
DUV results for the 2026 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.
Overview
The Crystal Springs 50 km Winter Trail Run, organized by Coastal Trail Runs, offers a course through Huddart Park, King's Mountain, and Bear Gulch in Woodside, CA. With 30 finishers in its latest 2026 edition, this 50k trail race has a smaller field than 43% of its peer 50k events.
Runners face a total time limit of 8.5 hours, which translates to a cutoff pace of 10.2 minutes per kilometer. This time limit is tighter than 75% of 1038 comparable 50k races, requiring runners to maintain a steady pace. The event has been held 10 times, with the first edition in 2015 and the next scheduled for January 17, 2027.
Similar races
Other 50K trail ultras, closest in distance first.