The Mount Vernon Trail is a scenic 18-mile pathway located in Northern Virginia, running alongside the Potomac River. It connects George Washington's Mount Vernon Estate to National Mall in Washington, D.C. The trail is popular for walking, running, and cycling, offering beautiful views of the river and the surrounding landscape. Along the trail, users can enjoy various parks and historical sites, including the Dyke Marsh Wildlife Preserve and Gravelly Point Park. The trail is well-maintained and features several access points, making it accessible for people of all ages and fitness levels.