Atlanta Fat Ass 50K

Lithia Springs, United States • 4 Jan 2026

The Atlanta Fat Ass 50K is an annual, low-key ultramarathon held at Sweetwater Creek State Park in Lithia Springs, Georgia. Established in 1994, this event offers 50K and 25K distances, run on six loops of the park's white trails featuring technical terrain with roots, rocks, and hills. The race is exclusive to members of the Georgia Ultrarunning and Trailrunning Society (GUTS) and is free of entry fees. A unique highlight is the FatAss Crockpot Chili Contest, where participants bring chili for post-race enjoyment and voting. The atmosphere is casual and community-focused, encouraging runners to burn off holiday pounds in a fun, supportive setting. Visit the organization's website for the most recent information.

Race information

50 km
50k
25 km
25k
Visit the organization's website for the most recent information.
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