The 11 50 mile ultramarathons in Illinois, with each one's climb, cutoff and date. Every race links to its own page, where you can see how it fits the runner you are now.
| Race | Distance | Where | Date | Climb | Cutoff |
|---|---|---|---|---|---|
| The Hennepin Hundred - Run | 50 Miles | Sterling, IL | Oct 3, 2026 | — | 15 h |
| Des Plaines River Trail Race | 50 Miles | Libertyville, IL | Oct 10, 2026 | 1,350 ft | 11.5 h |
| Farmdale Trail Run | 50 Miles | East Peoria, IL | Oct 10, 2026 | — | 22 h |
| Chicago Lakefront: Fall Version | 50 Miles | Chicago, IL | Oct 31, 2026 | — | 11 h |
| McNotagain Fall Trail Runs | 50 Miles | Pekin, IL | Nov 14, 2026 | — | 13 h |
| Tunnel Hill 50 Mile Race | 50 Miles (USATF Championship) | Vienna, IL | Nov 14, 2026 | — | 30 h |
| Potawatomi | 50 Miles | Pekin, IL | Apr 9, 2027 | 8,000 ft | 13.5 h |
| Loud Thunder Race | 50 Miles | Illinois City, IL | Apr 17, 2027 | 6,600 ft | 14 h |
| Childish Nonsense Race | 50 Miles | Palatine, IL | Apr 24, 2027 | — | 13 h |
| Cry Me a River! | 50 Miles | Chillicothe, IL | Jul 9, 2027 | 9,300 ft | 20.5 h |
| 40/50 Mile Challenge, Half Day Forest Preserve IL | 50 Miles | Vernon Hills, IL | Aug 28, 2027 | 1,800 ft | 12 h |