The Spring Backyard Burn (SBYB) is a series of 5 and 10 mile trail running races held on some of the best trail networks in the Northern Virginia Area. All the courses include a mixture of forested fire roads, twisty hiking trails, stream crossings, grassy fields, and minimal pavement.
All race information can be found on the race website.
Located just south of the Capital Beltway in Lorton, this beautiful race course includes a mixture of forested and open meadow singletrack meandering through 1600 acres of the former prison grounds. The race starts and ends under the old guard towers at the Workhouse Arts Center, which is the site of the former Lorton Reformatory. The course is one of our least technical and most of it is on singletrack that is a mix of dirt and crushed stone. The only short pavement sections are at the beginning and end of the race. There are no extended climbs, but lots of short ups and downs.
Charity partnership
During registration, you will have an opportunity to support a local non-profit Homestretch. The goal of the charity partnership is to first and foremost to raise awareness of the services Homestretch provides to families in our area. In addition, we hope to raise funds that will directly support their efforts. Please consider making a donation when you register.
Mar 15, 2026
Distance — 10 Miles
Type — Trail running
09:00
$55.00
Mar 15, 2026
Distance — 5.4 Miles
Type — Trail running
09:00
$45.00
Lorton is a community in Fairfax County, Virginia. This article also covers the nearby areas of Fort Belvoir and Mason Neck.
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location_on Annandale, Virginia, US
calendar_today Mar 01, 2026
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