22½th annual Potomac River Marathon Run & Half

13.1 or 26.2 miles alongside the mighty Potomac River, with scenic vistas of islands and waterfalls.  Flat, no road crossings, no hills, no hard surfaces -- the easiest trail marathon in the world!  Awards 3 deep in 10-year age groups M/F and cash prizes for top 3 overall M/F in the full marathon, presented on the spot.  Only a few openings remain, so sign up soon.

Location:
4940 Canal Road NW