Washington & Old Dominion Trail is a hiking, biking, and horse trail in Loudoun County, Virginia. It is within Raflo Park, Washington & Old Dominion Trail Regional Park, and Washington & Old Dominion Regional Park. It is 19.7 miles long and begins at 554 feet altitude. Traveling the entire trail is 12.3 miles with a total elevation gain of 684 feet. Liberty Street Lot, Washington & Old Dominion Railroad Regional Park, and other parkings and the Luck Stone Quarry Overlook viewpoint can be seen along the trail. There are also drinking waters, woods, restroom, a shelter, a picnic site, a bicycle parking, and grasslands along the trail.