Plenty of wildlife, lots of trails to bike or run, and sweeping views of the Potomac River.
Start your adventure at the Belle Haven Parking area then head down the Dyke Marsh Trail. To add on additional distance, head south down the Mt. Vernon Trail for more views, well maintained paths, and even some sitting areas. You'll find boardwalks that take you right across the marsh, so keep an eye out for turtles, snakes, and plenty of birds through these sections!