Brief Description
The One Day Hike (ODH), organized by the Sierra Club Potomac Region Outings (SCPRO; www.sierrapotomac.org), comprises two concurrent, non-competitive hikes of 100 km (62.1 mi) and 50 km (31.1 mi): The 100K starts at 3 AM from the Thompson Boat Center parking lot in Washington, DC; the 50K starts at 10 AM from Whites Ferry, MD. Both hikes proceed on the C&O Canal towpath along the Potomac River, ending in Harpers Ferry/Bolivar, WV, by midnight. The event has been held every year since 1974.