The 8 100 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 |
|---|---|---|---|---|---|
| Hindsight Ultra Trail Runs | 100 Miles | Dixon, IL | Sep 26, 2026 | 6,200 ft | 32 h |
| The Hennepin Hundred - Run | 100 Miles | Sterling, IL | Oct 3, 2026 | 2,000 ft | 30 h |
| Farmdale Trail Run | 100 Miles | East Peoria, IL | Oct 10, 2026 | 6,188 ft | 32 h |
| Tunnel Hill Race | 100 Miles | Vienna, IL | Nov 14, 2026 | 2,300 ft | 30 h |
| American Bottoms 113 | 113 Miles | Columbia, IL | Mar 20, 2027 | 1,591 ft | 35 h |
| Potawatomi | 100 Miles | Pekin, IL | Apr 10, 2027 | 16,000 ft | 30 h |
| Cry Me a River! | 100 Miles | Chillicothe, IL | Jul 9, 2027 | 18,500 ft | 36 h |
| Shawnee Hills Trail Races | 100 Miles | Ozark, IL | Aug 21, 2027 | 9,600 ft | 33 h |