Monocacy Aqueduct – Catoctin Creek Aqueduct loop from Seneca

If you're looking for a substantial gravel biking adventure that blends history with scenic riverside paths, the Monocacy Aqueduct – Catoctin Creek Aqueduct loop from Seneca is a fantastic choice. This moderate 58.0-mile (93.4 km) route, with a manageable 459 feet (140 metres) of elevation gain, typically takes around 4 hours and 37 minutes to complete, making it an ideal long day out for experienced gravel riders.

What to expect on Monocacy Aqueduct – Catoctin Creek Aqueduct loop from Seneca

This gravel biking route offers a diverse journey, primarily along the historic C&O Canal Towpath, which provides a mostly flat and scenic ride. You'll pedal past lush woodlands and riparian habitats, with the Potomac River often in view. The highlight is undoubtedly the Monocacy Aqueduct, a magnificent 500-foot, seven-arch stone bridge crafted from distinctive white and pink quartz sandstone, offering picturesque views. While much of the path is smooth, be prepared for some unpaved sections and occasional rolling hills, making it a rewarding ride for those with good fitness.

Planning your visit

The C&O Canal Towpath is generally well-maintained, but be aware that some areas, particularly a mile or two before Point of Rocks, have historically been prone to mud holes, especially after rain. While gravel bikes are suitable, consider tires of 50mm or wider if you anticipate rougher sections. There are no specific permits required for biking this section of the C&O Canal. Starting early in the day is always a good idea to enjoy cooler temperatures and fewer crowds, especially on weekends.

Trail details

• Distance: 58.0 miles (93.4 km)
• Elevation gain: 459 feet (140 metres)
• Difficulty: moderate
• Estimated time: 4 hours and 37 minutes