Flatrock 101
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Event overview
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
This race is part of the FlatRock Triple Crown series. The Triple Crown includes the WinterRock 25K on January 3, 2026, FlatRock 101K on April 18, 2026, and FlatRock 50K on September 26, 2026. Registration for this event closes on April 12, 2026.
Course, support and logistics
The course is a double out-and-back on the Elk River Hiking Trail. The trail is mostly single-track, very rocky, and winds through limestone bluffs, rock formations, and scenic vistas. Aid station coverage 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 at the turn-around), the 12K has 1 fully stocked aid station, and the 5K has no aid stations. Drop bags and crew are permitted only for the 50K and 101K, with designated access at Oak Ridge, the Turnaround, and the Start/Finish. Packet pickup is offered Friday evening with a spaghetti dinner that includes vegetarian and gluten-free options, and on race morning at the event staging area by the Outlet Channel Group Shelter. Complimentary race photos are provided by Mile 90 Photography. Visit the organization's website for the most recent information.