Washington and Old Dominion Railroad Regional Park (W&OD) a great long rail trail By sansoned in 7/13/2008 9:25:30 AM | We broke up the W&OD trail into 3 rides. What a great long rail trail. The western portion is particularly fine. We started from the Lake Fairfax Park campground. The trail is accessible from the campground, but the nature trail is too rough for road bikes (1.7mi.), never mind the deer ticks. There is a Performance Bike shop near the trail and campground. I rode with a father son (11 years old) team who were moving right along. We passed a prison work group working on the trail. Western Maryland Rail Trail great bike trail and in very good condition By sansoned in 7/12/2008 9:21:07 PM | We biked from the Happy Hills campground at about mile 15. Happy Hills campground claims to have an entrance to the WMRT, but it’s a mile of rough trail to the WMRT and horrible for road bikes. The WMRT is a great bike trail and in very good condition. We attempted geocaching while riding, but the geocaching was difficult and detracted from the enjoyment of the bike ride.