Great Falls Half (Half/10k/5k)

Race distances: 13.1 Miles, 3.1 Miles, 6.2 Miles. Great Falls Half, 10K & 5K / Saturday, November 21, 2026 · Great Falls Tavern, Potomac, MD Run the C&O Canal towpath along the Potomac, starting and finishing beside Lock 20 at Great Falls Tavern. All three distances head south along the canal past Widewater, Old Angler's Inn and Carderock, then turn for home. The towpath is flat, shaded crushed stone that was built for mules and is perfect for a fast fall race. Late November is the towpath's best season: the crowds are gone, the air is cool, and with the leaves down you get long views of the river. Every runner is tracked live on Geo.Racing,