The 8 100K ultramarathons in Kansas, 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 |
|---|---|---|---|---|---|
| Flatrock | 62.8 mi | Independence, KS | Sep 26, 2026 | 4,709 ft | 19 h |
| Ultrapalooza | 100 KM | Osawatomie, KS | Sep 26, 2026 | 1,200 ft | 30 h |
| Heartland 50 Mile Race | 100 KM | Cassoday, KS | Oct 9, 2026 | — | 30 h |
| Kansas Rails-to-Trails Extravaganza | 100 KM | Ottawa, KS | Oct 24, 2026 | 1,000 ft | 30 h |
| Hell Creek 100 km Race | 100 KM | Sylvan Grove, KS | Oct 30, 2026 | 6,072 ft | 24 h |
| Slough and Steady | 100 KM | Ozawkie, KS | Dec 19, 2026 | — | 19 h |
| Prairie Spirit Trail | 100 KM | Ottawa, KS | Mar 27, 2027 | — | 19 h |
| Iron Will Backroads | 100 KM | Enterprise, KS | May 29, 2027 | — | 19 h |