Pennyfield Lock – Horseshoe Bend at Great Falls loop from Pennyfield Lock Neighborhood Conservation Area

If you're looking for a truly challenging and rewarding jogging experience that combines history with dramatic river views, the Pennyfield Lock – Horseshoe Bend at Great Falls loop from Pennyfield Lock Neighborhood Conservation Area is definitely worth your time. This difficult 14.1-mile (22.7 km) route, with its modest 173 feet (53 metres) of elevation gain, will take you around 2 hours and 20 minutes to complete, demanding a very good fitness level despite its relatively flat overall profile. It's a fantastic option for experienced joggers seeking a long, varied run with plenty of scenic payoffs.

What to expect on Pennyfield Lock – Horseshoe Bend at Great Falls loop from Pennyfield Lock Neighborhood Conservation Area

Expect a diverse journey on this loop. You'll spend time on the historic C&O Canal Towpath, enjoying its flat, hard-packed surface and views of the canal, often lined with wildflowers. However, don't let the towpath fool you; the 'difficult' rating comes from the more rugged natural surface trails you'll encounter, especially as you approach the dramatic Great Falls of the Potomac. Here, the terrain shifts to rocky paths and uneven footing, offering breathtaking vistas of the Potomac River cascading through Mather Gorge and the iconic Horseshoe Bend. This route is best suited for experienced joggers who are ready for technical sections and have good sure-footedness.

Planning your visit

While much of the C&O Canal Towpath is generally flat, be prepared for potentially muddy and slushy conditions after rain, which can persist for weeks. The more challenging sections near Great Falls require sturdy shoes. Pennyfield Lock (Lock #22) serves as a convenient starting point, and you'll find parking available in the Pennyfield Lock Neighborhood Conservation Area. Consider visiting during the shoulder seasons to avoid summer heat and crowds, and always check weather conditions, especially for the more exposed sections near the river.

Trail details

• Distance: 14.1 miles (22.7 km)
• Elevation gain: 173 feet (53 metres)
• Difficulty: difficult
• Estimated time: 2 hours and 20 minutes