Flatrock

Dacula, United States • 17 Oct 2026

Flatrock - Georgia

Flatrock is a trail running event held in Dacula, Georgia at Harbins Park offering multiple distance options and a combined challenge. The organizer describes the course as true single track trail that is not technical, with undulating terrain and short hills that generally take a minute or two to climb.

Distances offered:

  • 50K: two 13.2 mile loops plus one 5.2 mile loop
  • Half Marathon: one loop
  • 50/50 Challenge: attempt to complete 50 miles by continuing after the 50K

Races begin and end at the same location and share the same start. Aid stations are located on the course and are accessible to family and friends. The course layout allows runners to pass the start and finish area more than once, which supports spectator access and crew logistics. Organizers provide a handbook with complete race day information.

Cutoff times:

  • 50K 9 hours
  • 13.2 mile loop 5 hours
  • 50/50 Challenge 9 hours strict cutoff; the 50/50 requires completing 50 miles within that cutoff or receiving no credit for either distance. Runners may choose to drop to the 50K before attempting the challenge.

Entries are capped and the event has sold out in recent years. All entrants receive a race item. Challenge finishers receive a specific shirt and other participants have access to complimentary race photos. Awards recognize the top three men and top three women in each race with special recognition and a free entry for the following year. Refund, transfer, and race credit options are available under the organizer refund policy. Visit the organization's website for the most recent information.

Race information

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

A trail running event at Charleston Park in Cumming, Georgia on March 7, 2026, offering 6.2 and 4.3 mile off-road courses with varied terrain and lake views, a 250 runner cap, and awards for top finishers.

The Trillium Trek Trail Run & Walk takes place in Gainesville, Georgia, on March 7, 2026. It offers three distances: 5K, 10K, and Half Marathon. The courses are set within an old-growth forest.

Trail trail races at Harbins Park in Dacula, Georgia on March 21, 2026 offering 7.10 and 3.55 mile double track courses with a 275 participant cap and age group awards.

A trail-only race at Fort Yargo State Park near Winder, GA, offering a 50K (two 15.6-mile loops) and a 25K (one loop) with marked trails, staffed aid stations, drop-bag support, finisher medals, and timing.