Registration closes: Fri, Nov 11 @ 11:59PM


10-11-16: Entry to the C&O Canal Towpath Marathon and Half Marathon has ceased since the event has sold out. It would be great if Altis Endurance could allow everyone who wants to run the 2016 event a chance to do so, but the race is limited by permit. Please see for a list of other trail races that runners might want to enjoy running and racing. Registration for the 2017 C&O Canal Towpath Marathon and Half Marathon is expected to open in January 2017. If you are interested in entering the 2017 race please click on the Add to Watch button (which is next to the green Registration button above) and become added to the Add to Watch list.

Race Information

The race web page is
There will be two half marathon start times since the National Park Service limits the number of starters at one time to 100. Half Marathon Wave 1 will start at 8:00AM, and Half Marathon Wave 2 will start at 8:30AM. The marathon starts at 7:30AM.
This race takes place in its entirety in Washington DC on the flat dirt and crushed stone surfaced C&O Canal Towpath. 3.28 miles of the towpath will be used for this event. Runners will head southeast from the start to the Francis Scott Key Bridge at which point runners will turn around and head northwest on the towpath. After running 3.28 miles northwest, runners will again turn around and head back southeast towards the start/finish line. Upon reaching the start/finish line runners will have completed a quarter marathon – or one course loop. Half marathon runners will run this course loop twice and marathon runners will run this loop four times in order to record finishes in their respective races.

Local time: 12:17 PM


Linked Events

Start Times

Top Performances