Saturday, February 13, 2027Auburn, CA
FOURmidable
4 events
- FOURmidable 50k50KUltraStarts 8:00 AM
- FOURmidable 35k35KTrailStarts 8:15 AM
- FOURmidable Half Marathon +21.6KTrailStarts 8:30 AM
- FOURmidable 13k13KTrailStarts 8:45 AM
Location
Approximate, from the race's ZIP code.
Typical race-day weatherIdeal weather · 95/100
- High / low
- 59° / 40°F
- 15° / 5°C
- Humidity
- 75%
- Dew point 40°F
- Chance of rain
- 30%
- Wind
- 6 mph
- Average
- Usually ideal weather for an ultra.
Averages for this area and time of year over the last 20 years, from NASA POWER data. Not a forecast.
Past results
- 6% fasterFinish times are typically 6% faster than at other trail 50Ks.1 year, 150 finishers; men and women compared separately.
- 31% slowerFinish times are typically 31% slower than at other trail half marathons.1 year, 77 finishers; men and women compared separately.
| Year | Event | Finishers | Median | Men | Women |
|---|---|---|---|---|---|
| 2026 | FOURmidable 50k · 50K | 150 | 6:35:17 | 6:20:05 | 6:53:54 |
| 2026 | FOURmidable 35k · 35K | 55 | 4:53:41 | 4:53:02 | 5:03:00 |
| 2026 | FOURmidable Half Marathon + · 21.6K | 77 | 3:34:11 | 3:19:11 | 3:41:02 |
| 2026 | FOURmidable 13k · 13K | 62 | 2:21:10 | 1:50:15 | 2:27:46 |
Median finish times from results published on RunSignup. Keyrace keeps only these summaries, never individual results. A fast or slow field affects times as much as the course does.