Sunday, March 14, 2027St. Charles, IL
Fox Valley Winter Challenge Trail Series 10K
View on RunSignup ↗Registration opens Mar 14, 2027
1 event
- Fox Valley Winter Challenge Trail Series 10k10KTrailStarts 10:00 AM
Location
Approximate, from the race's ZIP code.
Typical race-day weatherGood weather · 70/100
- High / low
- 48° / 28°F
- 9° / -2°C
- Humidity
- 79%
- Dew point 31°F
- Chance of rain
- 29%
- Wind
- 12 mph
- Average
- Usually cold for a trail race: about 33°F while racing.
- Often windy: about 12 mph on average.
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 10Ks.2 years, 389 finishers; men and women compared separately.
| Year | Event | Finishers | Median | Men | Women |
|---|---|---|---|---|---|
| 2026 | Fox Valley Winter Challenge Trail Series 10k · 10K | 195 | 1:06:50 | 1:02:18 | 1:10:36 |
| 2025 | Fox Valley Winter Challenge Trail Series 10k · 10K | 194 | 1:08:52 | 1:04:55 | 1:11:04 |
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.