Fall Backyard Burn Trail Run - Lake Fairfax
Reston, United States • 19 Oct 2025
Event overview
The Fall Backyard Burn Trail Run at Lake Fairfax takes place in Reston, VA on Sunday, October 19, 2025. The event is produced by EX2 Adventures and offers trail race options of one or two laps around a loop course. Registration includes opportunities to support the local non-profit Homestretch during sign-up.
Course and additional information
The course is almost entirely singletrack with a short prologue and very little pavement. The one-lap distance is listed as 5.1 miles and the two-lap option covers 10 miles. Elevation change is about 300 feet for the 5-mile lap and about 600 feet for the 10-mile option. There are some short technical sections with rocks and roots and many short ups and downs.
- 5.1 miles (one lap)
- 10 miles (two laps)
Race rules note that in-ear headphones are not permitted, pets, pacers, and baby strollers are not allowed on the course, and race numbers must be worn visibly on the front. Outside assistance is allowed only within 50 meters of an aid station, and participants must stay on designated trails. Race swag and optional finish medals are available; completing all five races in the series earns a special series medal. Visit the organization's website for the most recent information.