Lock 2 Lock Marathon/Half Marathon/10k

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.

2027 BQ Standards 

Marathon – race details 

https://www.strava.com/routes/3038509126320956732 Course Map

The race will start at 7:30 a.m. on September 12, 2026. Cutoff time is 3:00 p.m. (allowing for a pace of 17 minutes and 11 seconds per mile. Runners will start near Lock 44 and travel in a generally southeasterly direction for 6.56 miles to Lock 43 (exact point to be specified, marked and staffed by event volunteers), then turn around and travel back to Lock 44. Course elevation is no more than 40 feet for the entire distance. Runners will complete this out-and-back loop twice. 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.    

Half Marathon details 

https://www.strava.com/routes/3038509126320956732 Course Map

The race will start at 8:00 a.m. on Sept. 12, 2026. Cutoff time is 1:00 p.m. Runners will start near Lock 44 and travel in a generally southeasterly direction for 6.56 miles to about Lock 43, then turn around and run back to Lock 44. They will complete this out-and-back loop one time. Course elevation is no more than 20 feet for the entire distance.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.   

10K details

https://www.strava.com/routes/3038508438366518588 Course Map

The race will start at 8:15 a.m. on Sept. 12, 2026. Cutoff time is 11:15 a.m. Runners will start near Lock 44, run 3.1 miles on the towpath towards Washington D.C., turn around and run 3.1 miles back to Lock 44. Course elevation is no more than 10 feet for the entire distance. 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.   

Join fellow runners on September 12, 2026 for the Lock 2 Lock Marathon/Half Marathon/10k. It's a fantastic Marathon, Half-Marathon, 10K featuring a flat and fast course in Williamsport.