Ultra Running Hub Santa Cruz, CA, United States · Saturday, July 10, 2027
San Lorenzo River 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, July
Regional 2001-2020 average for July — NASA POWER, grid elevation 211 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50km | 42 | Jose Hernandez · 05:08:40 | Dora Jih · 07:10:56 |
| 2025 | 50km | 39 | Spencer Zeljak · 04:08:01 | Anna Janni · 05:46:39 |
| 2024 | 50km | 45 | Jonathan Sutherland · 05:19:27 | Gretchen Ziemer · 06:07:05 |
| 2023 | 50km | 37 | Matthew Littlefield · 04:51:18 | Lizzy Munro · 06:35:11 |
| 2022 | 50km | 28 | Galen Herron · 04:54:22 | Kelly Cure · 06:39:10 |
| 2021 | 50km | 81 | Brock Becker · 04:48:55 | Sunduk Kim · 05:25:33 |
| 2019 | 50km | 45 | Kevin Stewart · 04:13:33 | Kara Nassoiy · 05:22:31 |
| 2018 | 50km | 27 | Si-Qi Wu · 04:55:52 | Aya van Wagner · 06:33:13 |
| 2017 | 50km | 21 | Elfego Orozco · 05:34:30 | Rita Jett · 05:42:04 |
| 2016 | 50km | 21 | Christian Fernandez · 04:54:55 | Angela Abbey · 06:37:14 |
The field grew 8% between 2025 (39) and 2026 (42). 17% 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 San Lorenzo River Trail Run 50k takes place in Santa Cruz, CA, and is organised by Coastal Trail Runs. Since its first edition in 2016, 10 editions have been held, with 42 finishers at the latest in 2026.
This 50k race takes runners through varied terrain, from redwood forests with trees 300 feet tall and 1500 years old, to stream canyons, meadows, pine and oak forests, and dry, chaparral-covered ridges. Its field size is larger than 53% of the 2667 other 50k races.
Similar races
Other 50K trail ultras, closest in distance first.