Saturday, October 31, 2026Simsbury, CT
The River Run
2 events
- 5K5KRoadStarts 10:00 AM
- 10K10KRoadStarts 10:00 AM
Location
Approximate, from the race's ZIP code.
Typical race-day weatherIdeal weather · 86/100
- High / low
- 55° / 37°F
- 13° / 3°C
- Humidity
- 82%
- Dew point 40°F
- Chance of rain
- 33%
- Wind
- 5 mph
- Average
- Usually cold for a short race: about 41°F while racing.
Averages for this area and time of year over the last 20 years, from NASA POWER data. Not a forecast.
Past results
- 7% fasterFinish times are typically 7% faster than at other 5Ks.1 year, 446 finishers; men and women compared separately.
- 4% fasterFinish times are typically 4% faster than at other 10Ks.1 year, 300 finishers; men and women compared separately.
| Year | Event | Finishers | Median | Men | Women |
|---|---|---|---|---|---|
| 2025 | 10K · 10K | 300 | 1:00:10 | 55:55 | 1:03:48 |
| 2025 | 5K · 5K | 446 | 32:43 | 30:15 | 34:22 |
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.