Flatrock

Dacula, United States • 17 Oct 2026

Flatrock - Dacula, Georgia

Flatrock is a trail running event held in Harbins Park near Dacula, Georgia. The event offers multiple distances and a special 50/50 challenge. Registration is capped and organizers have noted past sellouts; registration closes Sat, Oct 10 at 11:59 PM ET.

Distances:

  • 50/50 Challenge (attempt to extend to 50 miles after the 50k)
  • 50K
  • Half Marathon (one loop)

The course follows undulating, nontechnical single-track trails through wooded terrain. Hills are short and generally take a minute or two to climb. The 50k route uses two 13.2-mile loops and one 5.2-mile loop; the half consists of a single loop. Aid stations are located on the course and are accessible to friends and family.

Cutoffs listed by organizers:

  • 50k 9 hours
  • 13.2 5 hours
  • 50/50 9 hours strict cutoff

The 50/50 challenge allows a runner to continue for an additional 20 miles after completing the 50k, but the full 50 miles must be completed within the 50k 9 hour cutoff to receive credit. Participants who finish the 50/50 receive a completion shirt and a free entry to the following year. Race entrants receive a commemorative race item and complimentary race photos. Refund, transfer, and race credit policies are specified by the organizers. Visit the organization's website for the most recent information.

Race information

50 mi
50/50 Challenge
50 km
50k
13 mi
13.2
13 mi
1/2 Marathon
Visit the organization's website for the most recent information.
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