Flatrock

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.