Marathons in Illinois
5 upcoming Marathon races in Illinois for 2026 and beyond — with dates, locations, and registration links.
- Comlara 12 Hour Sunrise-Sunset, 6 Hour, 3 Hour and Hour of Power Trail RunSat, Aug 22, 2026 · Hudson, IL82.1KMarathonHalf Marathon6.8K
- Belleville Main Street Marathon & Half MarathonSat, Sep 26, 2026 · Belleville, ILMarathonHalf Marathon
- 14th Annual Springfield Marathon & Harvest Wind Half Marathon & 10KSat, Nov 7, 2026 · New Berlin, ILMarathonHalf Marathon10K
- Rend Lake MarathonSat, Mar 27, 2027 · Benton, ILMarathonHalf Marathon10.5K
- F^3 Cap Sauers Trail Marathon & 10 MileSat, May 8, 2027 · Palos Hills, ILMarathon10 Miles