New England Green River Marathon

Greenfield, MA, USA · August 23, 2026
rain64°·77° high·Light·Light rain
7
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Race Day Weather

rain
64°at start
79° high
Light
Light rain

Warm conditions, adjust pacing early

Runners will face temperatures starting at 64°F and rising to 78°F, with high humidity at 89%. Light winds from the SE will shift to a tailwind at the end, but headwinds will challenge runners from miles 2 through 25. Given the heat and humidity, a conservative start is advised, especially in the early miles, with hydration breaks every couple of miles to maintain performance.

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Pace Calculator

Distance: 26.2mi
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Race Info

The New England Green River Marathon is one of the most beautiful races in New England. Starting in Marlboro, Vermont and following the course of the Green River through an 1870’s covered bridge, and ending with a finish-line celebration in the shade of maple trees at Greenfield Community College in Massachusetts. This USATF-certified (Certification MA18003JK) course has a net 1,400 foot drop over a rolling, downhill course that has seen many personal best and Boston qualifying times for well-trained runners. Source

FAQ

When is the 2026 New England Green River Marathon?

The 2026 New England Green River Marathon will be held on Sunday August 23, 2026.

Is the New England Green River Marathon a Boston Marathon Qualifier?

Yes, the New England Green River Marathon is an official Boston Marathon qualifier.

What is the time limit for the New England Green River Marathon?

The time limit for the New England Green River Marathon is 6.5 hours.

What will the weather be like for the 2026 New England Green River Marathon?

The forecast calls for a high of 79°F and a low of 64°F with a 67% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 7 years of data
Avg Temp
74°F
L:61° H:75°
RunScore
7
Conditions
Rain Freq
14%
1 of 7 yrs
Wind6mph
Dew61°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
64°/76°-
7
2024
partly-cloudy-day
54°/77°-
7
2023
partly-cloudy-day
62°/75°-
8
2022
cloudy
62°/73°-
8
2021
cloudy
62°/69°-
9
2019
partly-cloudy-day
51°/72°-
8
2018
rain
73°/81°Light
7