Trail Running calendar near Derwood 2025-2026

The More Miles Last One Standing Challenge is an endurance running event held in Knoxville, Maryland, featuring a unique "last one standing" format. Participants run a 4.167-mile loop, known as "the yard," every hour on the hour, continuing as long as they can complete the distance within the hour...

The Old Dominion 100 Endurance Run, held in Fort Valley, Virginia, is a challenging 100-mile race featuring a diverse course that includes pavement, gravel roads, single-track trails, ATV trails, logging roads, rocks, streams, and mud. This unique event tests runners' versatility across multiple ter..

The OSS/CIA 50 Mile Night Run is a challenging ultramarathon held in Prince William Forest Park, Virginia, a historic site once used to train World War II OSS spies. The race features a 25+ mile loop primarily on single-track trails, fire roads, and several bridge and road crossings, which runners c..

The Inferno 5k & 10k, held at Dirt Farm Brewing in Bluemont, Virginia, offers a rugged forest-trail challenge for runners of all paces. The course is a loop behind the brewery, with the 5k completing one loop and the 10k two, featuring steep climbs, exhilarating descents, and technical sections over..

Halloween Horror 5k & 10k returns to Conway Robinson State Forest Park in Gainesville, VA, offering a forest trail race with a Halloween theme. The event features 5k and 10k distances, with the 10k being two laps of the 5k course. The loop route traverses forest trails with technical sections and mi..