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Flatrock 101

Independence, United States • 18 Apr 2026

FlatRock 101 is a renowned trail ultramarathon held near Elk City Lake in Independence, Kansas, featuring distances of 101K, 50K, 25K, 12K, and 5K. As Kansas's oldest trail ultra, it offers a challenging double out-and-back course along the scenic Elk River Hiking Trail, characterized by limestone bluffs, rock formations, and mostly single-track, rocky terrain without long hills. The event includes multiple aid stations stocked with water, electrolytes, and snacks. It is part of the FlatRock Triple Crown Series, rewarding runners who complete all three races in the series. The race fosters a supportive atmosphere with pre-race dinners and volunteer benefits, emphasizing safety and respect. 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.
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