The Dark Side 8 Hour Ultra
Always double-check with the organizer's website! This page may contain affiliate links.
Event details
The Dark Side 8 Hour Ultra takes place on March 7, 2026, in Clarksburg, Maryland. It is an annual timed trail running event that gives participants eight hours to complete as many laps as they choose on a looped course. Registration closes on Sun, Mar 1.
Course and on-course support
The event is based at Little Bennett Park in Montgomery County, with the start/finish area at the Little Bennett Campground Pavilion. The loop distance is 5.5 miles and is primarily on single-track trails. Runners may complete one lap or multiple laps during the eight-hour window.
Aid stations will provide water, hydration options and a selection of ultra food items such as potatoes, broth, bacon and French toast sticks, with muffins also noted. A post-race meal will include veggie chili and a taco bar. Visit the organization's website for the most recent information.