Fall Backyard Burn Trail Run - Lake Fairfax

Lace up for an exhilarating journey through the picturesque trails of Lake Fairfax at the Fall Backyard Burn Trail Run on Sunday, October 18, 2026, in Reston, VA. This popular event, part of the well-regarded Backyard Burn Trail Running Series, offers two compelling distances: a single 5.1-mile loop or a challenging 10-mile course, comprising two laps of the scenic route. The course primarily features flowing singletrack, with only a brief prologue on a gravel road, ensuring an authentic trail experience. Runners will navigate a delightful mix of paths, encountering some rocks and roots that add a thrilling layer of technicality without being overly difficult, making it suitable for a range of skill levels. You'll tackle approximately 300 feet of elevation gain on the 5.1-mile loop, characterized by numerous short ups and downs rather than extended climbs, all while enjoying beautiful views of Lake Fairfax.

Runners can anticipate an "electric atmosphere" and "great music" complementing their race day experience. Aid stations are strategically placed around mile 1.5 and near mile 4.4 on the 5-mile course, providing essential support. Post-race, participants are treated to plentiful food, including breakfast burritos and other tasty treats. Adding to the community spirit, the event proudly partners with Homestretch, a local non-profit dedicated to assisting families in need, allowing runners to contribute to a meaningful cause.

With typical race day conditions seeing highs around 68°F and lows around 46°F, coupled with a mere 14% chance of precipitation, October 18th promises ideal fall trail running weather. The race kicks off at 9:00 AM from Canopy Pavilion G, with ample parking available in the nearby grass field and gravel lot. Beyond the main races, a free Kids Race for ages 2-11 ensures fun for the whole family, making the Fall Backyard Burn Trail Run a memorable day out on the trails.