Flatrock 101
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Event details
FlatRock 101 takes place on April 18, 2026, at Elk City Lake near Independence, Kansas. The event offers multiple distances:
- 101K
- 50K
- 25K
- 12K
- 5K
The FlatRock Triple Crown series includes WinterRock 25K (January 3, 2026), FlatRock 101K (April 18, 2026), and FlatRock 50K (September 26, 2026). Runners who finish all three receive a special award.
Course and logistics
The course is a double out-and-back on the Elk River Hiking Trail. It is an accurately measured forest trail with limestone bluffs, rock formations, and vistas. The route is mostly single-track, very rocky, and has no long hills.
Aid station support varies by distance. The 101K has 15 aid stations (11 fully stocked, 4 water only); the 50K has 7 aid stations (5 fully stocked, 2 water only); the 25K has 3 aid stations (2 fully stocked, 1 water only); the 12K has 1 fully stocked aid station; the 5K has no aid stations. Approximate spacing between aid stations is 3.5 to 5 miles.
Drop bags and crew are allowed for the 50K and 101K at designated locations. Packet pickup is offered in two sessions with a pre-race spaghetti dinner that includes vegetarian and gluten-free options. Time limits and intermediate cutoffs apply for each distance. Visit the organization's website for the most recent information.
