Ultra Running Hub San Francisco, CA, United States · Sunday, December 6, 2026
Hunter S. Thompson Fear & Loathing 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, December
Regional 2001-2020 average for December — NASA POWER, grid elevation 87 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50km | 97 | Peter Emanuel · 04:31:47 | Chloe Shiff · 05:05:00 |
| 2024 | 50km | 66 | Henri Romeo Patricio · 04:41:48 | Robin Rose · 05:20:00 |
| 2023 | 50km | 86 | Henri Romeo Patricio · 04:43:16 | Mei Yang · 05:18:51 |
| 2022 | 50km | 50 | Jakob Walter · 05:00:00 | Rebecca Metrick · 05:19:00 |
| 2021 | 50km | 46 | Nicholas Su · 04:14:00 | Rebecca Metrick · 05:32:00 |
| 2020 | 50km | 43 | Oliver Chan · 04:27:00 | Sunduk Kim · 04:29:00 |
| 2019 | 50km | 30 | Noah Simcoff · 04:26:00 | Rebecca Metrick · 05:51:00 |
| 2018 | 50km | 47 | Noah Simcoff · 04:45:48 | Ann Xiang · 06:33:00 |
| 2017 | 50km | 48 | Keith Blom · 05:14:42 | Kendra Hershey · 06:03:00 |
| 2016 | 50km | 41 | Keith Blom · 05:23:00 | Monica Zhuang · 05:07:00 |
The field grew 47% between 2024 (66) and 2025 (97). 28% 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.
Course notes
- gear 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
Held in San Francisco, CA, the Hunter S. Thompson Fear & Loathing 50 Km sends runners along the city streets of the 49 Mile Scenic Drive after starting from Twin Peaks. With 97 finishers in 2025, the event draws a bigger field than 78% of 50k peers and smaller than 22%, offering a shared pack experience across the urban pavement.
The 11-hour time limit requires a cut-off pace of 13.2 minutes per kilometer, making it more generous than 64% of 50k cut-offs and tighter than 36%. That cushion accommodates extended walking breaks on the city hills without jeopardizing a finish across the 50-kilometer route.
Similar races
Other 50K trail ultras, closest in distance first.