Highlight • Monument
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Pennyfield Lock, also known as Lock #22, is a significant man-made monument nestled along the historic Chesapeake and Ohio Canal (C&O Canal) in Montgomery County, Maryland, United States. Situated at an elevation of approximately 55 meters along the Potomac River, this lock is an integral part of the 184.5-mile canal system that operated from the 1830s through 1923, connecting the Chesapeake Bay with an ambitious goal of linking to the Ohio River. Today, it stands as a preserved historical site…
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May 15, 2025
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82
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64.2km
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300m
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Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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56
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Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Details
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Elevation 60 m
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Yes, the primary route for hiking, cycling, and jogging is the C&O Canal Towpath, which runs directly past Pennyfield Lock (mile-marker 19.7). This flat, scenic path extends for 184.5 miles, offering various distances for all activity levels. For those interested in wildlife, the towpath also provides access to the Pennyfield Lock Neighborhood Conservation Area and Dierssen Wildlife Management Area.
Pennyfield Lock is primarily accessed by car. It is situated near River Road in Montgomery County, Maryland, and can be reached via Pennyfield Lock Road. There is no direct public transport service to the lock itself, so visitors typically drive and use the available parking area at the end of Pennyfield Lock Road.
Absolutely. The area is considered very family-friendly. The C&O Canal Towpath is flat and well-maintained, making it suitable for leisurely walks with children, strollers, and even bikes. The historical lockhouse and the natural surroundings offer educational and engaging experiences for all ages.
Yes, Pennyfield Lock and the C&O Canal Towpath are generally dog-friendly. Many visitors enjoy bringing their canine companions for walks and runs along the towpath. Please ensure your dog is kept on a leash and that you clean up after them to maintain the natural beauty and cleanliness of the park.
While there are no hotels directly at Pennyfield Lock, the restored Pennyfield Lockhouse (Lock #22) is available for overnight stays through the "Canal Quarters Program." This offers a unique, rustic experience without modern amenities like electricity or plumbing, reflecting its historical period. For traditional hotels and other accommodations, visitors would need to look in nearby towns such as Potomac Village or further into Montgomery County.
The length of a walk at Pennyfield Lock is entirely up to the visitor, as it's part of the extensive C&O Canal Towpath. You can enjoy a short stroll around the lock and lockhouse, or embark on longer walks for several miles in either direction along the flat towpath. Many choose to walk a few miles out and back, enjoying the scenic views and birdwatching opportunities.
The C&O Canal Towpath, which runs past Pennyfield Lock, is generally flat and composed of crushed stone, making it accessible for many wheelchair users. However, conditions can vary, especially after heavy rain. It's advisable to check current trail conditions with the National Park Service before visiting if accessibility is a primary concern.
Pennyfield Lock offers something year-round. For birdwatching, spring and fall migrations can be particularly rewarding, though abundant birdlife is present throughout the year, especially in the adjacent Dierssen Wildlife Management Area. Summer is ideal for activities like fishing and launching small boats into the Potomac River from the nearby ramp. The historical significance makes any time a good time to visit, but warmer months allow for more outdoor recreational opportunities.
For a winter walk at Pennyfield Lock, it's essential to dress in layers. The towpath can be exposed, so warm, waterproof outerwear is recommended. Consider wearing a warm hat, gloves, and sturdy, waterproof boots with good traction, as the path can sometimes be icy or muddy. The lockhouse is not heated for day visitors, so prepare for outdoor temperatures.
Pennyfield Lock is located in a more natural and historical setting, so there are no cafes, pubs, or restaurants directly adjacent to the lock. Visitors should plan to bring their own refreshments or find dining options in nearby communities such as Potomac Village, which is approximately 6 miles away.
The area around Pennyfield Lock, including the Pennyfield Lock Neighborhood Conservation Area and Dierssen Wildlife Management Area, is a favorite spot for birdwatchers due to the numerous birds and waterfowl. Visitors can often spot various species of birds, and the Potomac River environment also supports other wildlife, though specific sightings can vary.