Dam 4 C&O – Antietam Aqueduct loop from Brunswick

If you're looking for a truly challenging and rewarding day on two wheels, the Dam 4 C&O – Antietam Aqueduct loop from Brunswick is a difficult gravel biking route that delivers. Spanning 59.6 miles (95.9 km) with 951 feet (290 metres) of elevation gain, this ride will take you approximately 7 hours and 49 minutes to complete, making it ideal for experienced gravel bikers with very good fitness.

What to expect on Dam 4 C&O – Antietam Aqueduct loop from Brunswick

This loop immerses you in a journey through history and diverse landscapes, primarily along the C&O Canal Towpath. You'll encounter varied terrain, from sections of smooth crushed limestone to rugged gravel, deep ruts, and even muddy or sandy patches, especially around Dam 4 where the towpath can be very steep. The route offers continuous riverine views alongside the Potomac, leading you to historical marvels like the 1856 Dam 4 and the impressive three-arch Antietam Aqueduct, built in 1834. Expect a demanding ride that might require pushing your bike in some spots, but the historical significance and natural beauty make the effort worthwhile for those seeking advanced gravel biking routes near Brunswick MD.

Planning your visit

The C&O Canal Towpath is free of motor vehicles, providing a peaceful cycling experience. While specific parking details for Brunswick are not provided, the route is accessible from the town. The dense foliage along much of the C&O Canal National Historical Park offers a cool respite during warmer months, making late spring or early fall potentially the best time to bike this C&O Canal Towpath Dam No. 4 Antietam Aqueduct route. Be prepared for a long day and carry ample water, as services can be sparse along the towpath.

Trail details

• Distance: 59.6 miles (95.9 km)
• Elevation gain: 951 feet (290 metres)
• Difficulty: difficult
• Estimated time: 7 hours and 49 minutes