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Flatrock 101

Independence, United States • 18 Apr 2026

FlatRock 101 is a renowned trail ultramarathon held near Independence, Kansas, featuring distances of 101K, 50K, 25K, 12K, and 5K. The course is a double out-and-back on the scenic Elk River Hiking Trail, showcasing limestone bluffs, rock formations, and forested single-track paths with rocky terrain but no long hills. The event is part of the FlatRock Triple Crown Series, which includes the WinterRock 25K and FlatRock 50K races. Aid stations are well-stocked with food and drinks, and the race offers a supportive atmosphere with pre-race dinners and volunteer benefits. It is the oldest trail ultra in Kansas, celebrated for its challenging yet picturesque course. Visit the organization's website for the most recent information.

United States Kansas Independence

Race information

Registration
101 km
101k
50 km
50k
25 km
25k
12 km
12k
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

Flatrock 101

Independence

The FlatRock event, held in Independence, Kansas, features multiple trail races along the Elk River Hiking Trail, including 50K, 25K, 12K, and 5K distances. The course is technical, primarily single-track, winding through limestone bluffs, rock formations, and scenic vistas. The event is part of the..

Outlaw WinterRock

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Outlaw WinterRock is a trail running event held at Elk City Lake in Independence, Kansas, featuring 25K and 12K distances. The course is a technical, mostly single-track out-and-back route along the Elk River Hiking Trail, winding through limestone bluffs, rock formations, and scenic vistas. Aid sta..