Chesapeake and Ohio Canal Towpath, Williamsport MD
Saturday, September 12th, 2026
What: 5th Annual Lock 2 Lock Marathon, Half Marathon and 10K
When: Saturday, September 12, 2026
Where: Entirely along the C&O Canal Towpath in Williamsport, Maryland
All three races take place on the C&O Canal towpath. The start/finish area will be Lock 44 (DO NOT USE FOR PARKING).
This is a BQ certified course! 2026 times can be used for 2027.
The course certification number is MD22006NP.
Aid stations will be at miles 2, 4, 6.56, 9.12, 11.12, 13.12, 15.12, 17.12, 19.68, 22.24, 24.24 and finish line. AS will be stocked with water, Gatorade Endurance, pickle juice, potato chips, and other TBD snacks. There will also be a tarp at the start/finish line where you can leave gu's, bottles, or other race day needs.
Aid stations will be at miles 2, 4, 6.56, 9.12, 11.12, and finish line. AS will be stocked with water, Gatorade Endurance, pickle juice, potato chips, and other TBD snacks.
Aid stations will be at miles 2, 4, and the finish line. AS will be stocked with water, Gatorade Endurance, pickle juice, potato chips, and other TBD snacks.
For additional details, visit the Lock 2 Lock Marathon website.
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