Lock 2 Lock Marathon

The Lock 2 Lock Marathon, Half Marathon, and 10K take place annually along the scenic Chesapeake and Ohio Canal Towpath in Williamsport, Maryland. The 2025 event, the 4th annual, offers a Boston Qualifier certified course with minimal elevation changes, making it ideal for runners aiming to qualify for the Boston Marathon. The marathon features a two-loop out-and-back route between Locks 44 and 43, while the half marathon completes one loop, and the 10K covers a shorter out-and-back segment.

Aid stations provide water, Gatorade, pickle juice, and snacks. Participants receive custom race bibs, finisher awards, and post-race refreshments in a family-friendly atmosphere. Parking is available nearby, and the event is professionally timed. Visit the organization's website for the most recent information.