The Chesapeake & Ohio Canal is a national park that stretches for 184.5 miles along the Potomac River from Cumberland, Maryland, to Washington, D.C. The towpath is relatively flat and offers an easy terrain for hikers and bikers of all skill levels. The park also offers access to launching ramps for boaters, canoeists, and kayakers. You can access the park as it passes through Washington County using one of the many points, below.