Saturday, February 20, 2027Aurora, IL
Fox Valley Winter Challenge Trail Series 8K
View on RunSignup ↗Registration opens Feb 20, 2027
1 event
- Fox Valley Winter Challenge Trail Series 8k5 miTrailStarts 10:00 AM
Location
Approximate, from the race's ZIP code.
Typical race-day weatherFair weather · 56/100
- High / low
- 37° / 19°F
- 3° / -7°C
- Humidity
- 82%
- Dew point 22°F
- Chance of rain
- 27%
- Wind
- 13 mph
- Average
- Usually very cold for a trail race: about 23°F while racing.
- Often windy: about 13 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
- 17% fasterFinish times are typically 17% faster than at other trail 8Ks.2 years, 361 finishers; men and women compared separately.
| Year | Event | Finishers | Median | Men | Women |
|---|---|---|---|---|---|
| 2026 | Fox Valley Winter Challenge Trail Series 8k · 5 mi | 189 | 50:20 | 44:20 | 54:57 |
| 2025 | Fox Valley Winter Challenge Trail Series 8k · 5 mi | 172 | 46:43 | 44:37 | 51:33 |
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.