Lock 2 Lock Marathon

Williamsport, MD, USA · September 11, 2027
partly-cloudy-day64°·79° high·Light·Dry
8
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Race Day Weather

partly-cloudy-day
64°at start
79° high
Light
Dry

Warm start, rising temps ahead

Runners will face temperatures starting at 64°F, climbing to a peak of 79°F by the end of the race. With humidity at 66% and a slight breeze from the WSW, pacing adjustments are crucial, especially as the heat builds in the later laps. Hydration will be important throughout, and runners should consider starting conservatively to manage the warming conditions. Light rain is possible, so a throwaway layer may be useful during pre-race.

Race day forecast available in 321 days
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Pace Calculator

Distance: 26.2mi
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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.

FAQ

When is the 2027 Lock 2 Lock Marathon?

The 2027 Lock 2 Lock Marathon will be held on Saturday September 11, 2027.

Is the Lock 2 Lock Marathon a Boston Marathon Qualifier?

Yes, the Lock 2 Lock Marathon is an official Boston Marathon qualifier.

What is the time limit for the Lock 2 Lock Marathon?

The time limit for the Lock 2 Lock Marathon is 7.5 hours.

What will the weather be like for the 2027 Lock 2 Lock Marathon?

The forecast calls for a high of 81°F and a low of 63°F with a 9% chance of rain.

Historical Weather

Based on 4 years of data
Avg Temp
78°F
L:66° H:79°
RunScore
7
Conditions
Rain Freq
25%
1 of 4 yrs
Wind10mph
Dew61°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
67°/76°-
8
2025
clear-day
70°/83°-
7
2024
cloudy
61°/71°Light
8
2023
partly-cloudy-day
67°/86°-
7