From Iwo Jima, go through Rosslyn and cross Key Bridge. Take a sharp right after the bridge down to river side of C&O Canal. Turn right (go under Key Bridge) and run for miles!

The mile markers are conveniently situated to match up with the distance travelled from Iwo Jima. In other words, mile marker 3 (near Fletcher's Boathouse) is 3 miles running from Iwo Jima. Note that the mile markers are not all perfectly accurate, so don't count on splits, but general distance is close.

12 miles to Towpath Mile Marker 6 and back.

19 miles to Beltway and back. (Towpath Mile Marker 9.5)

Water stops (water turned off in winter):
Water and facilities at Fletcher's Boathouse at Mile Marker 3
Water at Towpath Mile Marker 5
Water just before Towpath Mile Marker 9