The 21st annual Fall Backyard Burn (FBYB) Trail Running Series 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.
Lake Fairfax Regional Park
Sunday October 18, 2026
9AM
Reston, VA
Located in Reston, VA, this suburban park has a beautiful lake, huge fields, pavilions, and many newly designed trails. This fast and fun race course includes semi-technical forested singletrack, lakeside trails, and open fields.