Lock 2 Lock Marathon
Race Day Weather
Warm afternoon, adjust pace early
Runners will face a temperature increase from 59°F at the start to 77°F by the finish, with humidity averaging 61%. A light 10 mph wind will provide a mix of headwind, tailwind, and crosswind throughout the race. As temperatures rise, it’s crucial for runners to start conservatively and adjust their pace in the later laps, ensuring proper hydration to combat the heat.
Get forecast alerts for Lock 2 Lock Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Lock 2 Lock Marathon runs along the flat, tree-lined C&O Canal Towpath in Williamsport, Maryland, out and back between Lock 44 and Lock 43. The marathon covers the 6.56-mile stretch twice, while the half marathon and 10K each run it once from later start times. With no more than 40 feet of total elevation change, the course is Boston Marathon-qualifying certified. The race is organized by 2 Lowe Run Company and a portion of proceeds benefits the Perinatal Bereavement Fund through the Meritus Foundation.
