Logo

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

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

Terror Trails Ultra

Waxhaw - 14 mi from Lancaster

Terror Trails Ultra is a trail running event held at Cane Creek Park in Waxhaw, North Carolina, offering distances of 4 miles, 8 miles, 25K, and 50K. The course features a mix of smooth, fast trails and technical sections with rocks, roots, and creek crossings, providing a challenging and scenic exp..

Springmaid Trail Race

Fort Mill - 22 mi from Lancaster

The Springmaid Trail Race, held at Anne Springs Close Greenway in Fort Mill, South Carolina, offers a scenic fall running experience on beautiful single-track trails. Participants can choose from a half marathon, 10K, 5K, or a 5K Dog Jog, with awards for top runners and dogs. The event supports the..

Lake Haigler 12-Hour

Fort Mill - 22 mi from Lancaster

Lake Haigler 12-Hour is a night-time ultrarun held at the ASC Greenway in Fort Mill, South Carolina. The race centers on a 5K loop around and near Lake Haigler, run as a continuous 12-hour event on a Saturday. The atmosphere is intimate and trail-focused, with a single aid station at the start/finis..

Charlotte Running Company Trail Race

Fort Mill - 22 mi from Lancaster

Charlotte Running Company Trail Race takes place at Anne Springs Close Greenway, Lake Haigler, in Fort Mill, SC, about 16 miles from downtown Charlotte. The event offers 4-, 9-, and 13-mile trail courses winding through scenic natural beauty. It aims for a social, celebratory atmosphere after finish..

Mill Stone 50k

Fort Mill - 22 mi from Lancaster

The Mill Stone 50K is a challenging trail ultramarathon held at the scenic Anne Springs Close (ASC) Greenway in Fort Mill, South Carolina. The race features three 10.5-mile loops of mostly single-track, technical trails with some gravel and dirt paths, including at least two creek crossings. The cou..

Devil Makes Three 50k

Waxhaw - 14 mi from Lancaster

Devil Makes Three 50k and 10 Mile takes place in Waxhaw, North Carolina. The event offers a 50k built from three loops of a 10-mile course, plus a separate 10-mile option, set on a scenic, wooded route described as tucked away in the woods of Waxhaw. The course blends technical trails, prairie grass..