Saturday, May 1, 2027Rockport, IL
RIVER TO RIVER MARATHON
View on RunSignup ↗Registration opens Jan 2, 2027
1 event
- River to River Marathon (Mississippi River to Illinois River)41KRoadStarts 8:00 AM
Location
Approximate, from the race's ZIP code.
Typical race-day weatherGood weather · 70/100
- High / low
- 70° / 49°F
- 21° / 9°C
- Humidity
- 76%
- Dew point 51°F
- Chance of rain
- 48%
- Wind
- 10 mph
- Average
- Usually warm for a marathon: about 58°F while racing.
- Rain on about 48% of days around this date.
- Often windy: about 10 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
| Year | Event | Finishers | Median | Men | Women |
|---|---|---|---|---|---|
| 2026 | River to River Marathon (Mississippi River to Illinois River) · 41K | 20 | 3:59:22 | — | — |
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.