Capital Backyard Ultra

Capital Backyard Ultra - Lorton, VA

The Capital Backyard Ultra is a Last Runner Standing endurance race scheduled for March 20, 2027, at Meadowood Special Recreation Management Area, 10702 Harley Rd, Lorton, Virginia. The format uses repeating hourly loops and continues until only one runner completes a yard more than all others.

The event uses a single loop of 4.167-mile (6.7056 km). Each loop, called a yard, begins precisely one hour after the previous start. Core rules require runners to be in the starting corral when the bell rings, begin with the bell, and complete the loop within the hour. Runners may not receive personal aid during an active yard, no pacing is allowed, and crews and spectators must remain outside the active course area.

The course setup includes a runnable rolling daytime loop and a paved night loop. Runners stage beneath an on-site pavilion and crew areas are located very close to the starting corral. The aid station is staffed by two professional chefs with ultrarunning experience and provides food and refreshments between yards.

Entry is managed via Ultrasignup and uses a waitlist with invitations issued on a rolling basis until the field reaches capacity. The field is limited to 65 runners. Automatic entry is given to runners who have completed a 100-mile race and to previous Capital participants; beginning December 1, 2026, 50-mile finishers may also receive invitations if spots remain. The all-inclusive 2027 entry fee is $225 and includes a 12x12 crew space, Friday overnight camping, chef-supported aid, premium food, a race hat, and an official race shirt. Registration closes March 1 at 11:59 PM ET. Visit the organization's website for the most recent information.