Capital Backyard Ultra

MAR
20
2027
Test your limits in Lorton at this elite backyard marathon featuring dedicated day and night loops. With a limited field of 65 runners and a chef supported aid station, it is the perfect venue for a personal best.
Sat 20 Mar 2027
4.167 Mile Loop

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Event Overview

The Capital Backyard Ultra is a high-level endurance event held at the Meadowood Special Recreation Management Area in Lorton, Virginia. This competition is limited to 65 athletes and is designed to support participants pursuing breakthrough distances. The event follows the traditional backyard ultra format, where runners must complete a 4.167-mile loop every hour.

The course features two distinct loops to accommodate different times of day:

  • Day Loop: Used from 7:00 AM to 7:00 PM, this 4.167-mile trail loop consists of flat, open fields for the first 0.7 miles, followed by dirt and crushed gravel bridle trails. It features an elevation gain of approximately 300-350 feet per loop.
  • Night Loop: Used from 7:00 PM to 7:00 AM, this 4.167-mile loop follows a paved bike path. It is rolling but mostly flat, with roughly 75 feet of elevation gain per loop.

Logistics and Staging

Participants stage under a large on-site pavilion that encloses the aid station and all runner sites, providing protection from weather. Crew setups are located seconds from the starting corral. Camping is available for runners and their crews starting Friday night. Parking is available on-site, with some spaces adjacent to the shelter.

Support and Rules

The aid station includes professional food service and refreshments. Entry includes a dedicated crew space, chef-supported race food, and official gear. Participants must be in the starting corral when the bell rings and may not receive personal aid or use trekking poles while on the course. The race continues until only one runner remains to complete a solo loop. Visit the organization's website for the most recent information.

Events nearby

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Run 4 MK is the fifth annual Miriam’s Kitchen 5k and 10k in Washington, DC supporting programs to end chronic homelessness with in-person and virtual options.
Trail races at Hemlock Overlook in Clifton VA on November 15 2026, with 5.2 mile and 9.5 mile options on riverfront hiking trails and park facilities.
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