23. Colvin Run Trail

This trail begins where the FairFax Cross County Trail crosses Rt. 7 (on the south side of Rt. 7, turn south on Carper's Farm Way) and extends 3 miles west along Colvin Run to Lake Fairfax Park. You can make this an 8.5 mile-loop by following the trails across Lake Fairfax Park to the Washington & Old Dominion Trail, going east 2 and 1/4 miles to where the Fairfax Cross County Trail goes north across Tamarack Park. Continue to follow the Fairfax Cross County Trail north to return to your starting point on Rt. 7. 

Trail map.