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Mo Big Butt 50 K

Lancaster, United States • 27 Dec 2025

Mo Big Butt 50 K is a South Carolina ultramarathon run by the Runner From Hell community. In its 32nd edition, about 25 starters tackle a 50‑kilometer course on a familiar local route, with self-timing and no aid. Parking is typically at the organizer’s yard, and the course is kept by volunteers and neighbors who clear shoulders along the route.

The event is known for a tough, homegrown atmosphere that emphasizes camaraderie and grit. Recent editions produced state-age records in the 50–54 and 55–59 divisions, underscoring the strong field. The race highlights a supportive, community‑driven, no‑frills ultrarunning experience. Visit the organization's website for the most recent information.

United States South Carolina Lancaster

Race information

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50 km
Mo Big Butt 50k
Visit the organization's website for the most recent information.
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