The 12-HR ATR takes place in the expansive Prince William Forest Park, covering over 17,000 acres and featuring more than 40 miles of trails. Participants will navigate a challenging 6.5-mile looped course that consists of both single track and fire roads, designed to test the skills of both novice and seasoned trail runners. Each loop presents approximately 650 feet of elevation change, featuring rolling hills, rocky sections, roots, and mud, particularly if conditions are wet. Runners will have access to two aid stations during the event: a primary station at the Start/Finish providing a variety of food options, and a second station focused solely on water. The race culminates in an awards ceremony along with a post-race meal for all participants and their crews, thanks to the support of local businesses like REI and The Running Store.