Flatrock

Dacula, United States • 11 Oct 2025

Flatrock in Dacula, Georgia, is a grassroots trail ultramarathon offering a 50K, a half marathon (13.1 miles), and the optional 50/50 Challenge. The course features undulating, non-technical single-track through wooded terrain, with short hills that keep things moving. The 50K consists of two 13.2-mile loops plus a 5.2-mile loop; the half is a single loop.

The event emphasizes a family-friendly, spectator-friendly atmosphere at Harbins Park, with accessible aid stations and Southern hospitality. All entrants receive a race item; 50/50 finishers earn a shirt and a free entry to return next year. Extras include race photos and hoodies, plus flexible refunds and bib transfers. Visit the organization's website for the most recent information.

Race information

50 mi
50/50 Challenge
50 km
50k
13 mi
13.1 Miles
Visit the organization's website for the most recent information.
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