Flatrock

OCT
17
2026
Flatrock in Dacula, Georgia is a trail event offering a 50K, a half marathon and a 50/50 challenge on flowing, nontechnical singletrack with accessible aid stations and capped registration.
Sat 17 Oct 2026
50 miles 50 kilometers 13 miles

Always double-check with the organizer's website! This page may contain affiliate links.

Flatrock, Dacula, Georgia

Flatrock is a trail running event held in Harbins Park near Dacula, Georgia. Races take place on flowing singletrack through wooded terrain with undulating hills. The trails are described as nontechnical but require map reading, attention, and following course markings.

Distances offered:

  • 50K
  • Half Marathon (13.1 miles)
  • 50/50 Challenge

The 50K course uses two 13.2 mile loops plus one 5.2 mile loop. The half marathon consists of a single loop. Aid stations are located on the course and are accessible to friends and family near the route and start/finish area.

Time limits and rules are specified for each distance. Known cutoffs include a 9 hour limit for the 50K and a 5 hour limit for the 13.2 mile loop. The 50/50 Challenge requires completing 50 miles within the 50K 9 hour cutoff; failing to do so results in no credit for either distance.

Registration is capped and the event has sold out in recent years. The organizer offers a handbook with complete race day information. Entry policies include options for race credit refunds by specified dates and allow bib transfers and partial race credits. Visit the organization's website for the most recent information.

50 mi
50/50 Challenge
50 km
50k
13 mi
1/2 Marathon
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.