Directions: From Lawyers Rd and Hunter Mill intersection, take Lawyers west. The trail crosses Lawyers Rd at the cross walk just east of Birdfoot. Paved trail goes north into Reston; I recommend the "uncivilized" trail going south which is what is described here.
Trail Information: The Fairfax County Connector Trail is 30-40 miles long, and runs from the Potomac River south through the county. My favorite part is the less civilized dirt trail, which begins at Lawyers Rd and goes south to the Oakmarr Rec Center (about 5 miles?). However, the trail is being improved periodically - now it has steps carved into some of the hilly parts! This beautiful, tree-shaded part of the trail is shared with horses, runners, their dogs, and bike riders. If you keep your eyes open, you will see deer, beaver, and other wildlife. Watch carefully for the "CT" sign posts marking the Connector Trail - otherwise you may be mislead by one of the many unmarked horse trails that branch off. The part from Lawyers south to Leeds is hilly, runs up and down valleys, and includes a rocky stream crossing, which is dry when the creek is low. The section of the trail from Leeds to Oakmarr is flatter, through some meadows, past pastures, and along Difficult Run! stream valley. You will cross Vale Rd. south of Leeds. As always, watch for hidden roots and rocks. IMHO, the Virginia clay renders the hilly part of the trail too slippery to run except during a dry spell. You could park at Oakmarr Rec Center, and run the trail in reverse to Lawyers. Google "Fairfax County Connector Trail" for a detailed map, including all 30-40 miles.