About the Great Falls Half (Half/10k/5k)
The course runs the C&O Canal towpath, a crushed stone path built flat alongside the Potomac. All distances head south through Widewater, then past Old Angler's Inn and Carderock before turning back. With the leaves down in late fall, the river opens up through the trees for long stretches. The path stays shared, so expect the occasional cyclist or walker.
The race starts and finishes beside the historic lock at Great Falls Tavern. Parking at the park gate is limited and costs a fee, so carpooling is worth planning ahead. After you finish, the boardwalk to Great Falls Overlook is a short walk from the finish area, with the Potomac dropping into Mather Gorge right below.
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Distances & Start Times
13.1 Miles11/21/2026 12:00$85
6.2 Miles11/21/2026 12:30$75
3.1 Miles11/21/2026 13:00$65
Going for a Time?
Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.
Not sure what to aim for? The half marathon pace chart lists the pace for every finish time.
Where to Stay
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