New England Green River Marathon

Greenfield, MA, USA · August 23, 2026
partly-cloudy-day65°·76° high·Light·Dry
8
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Race Day Weather

partly-cloudy-day
65°at start
76° high
Light
Dry

Warm start, adjust pace wisely

Runners will face a temperature rise from 65°F at the start to 76°F by the finish, with average humidity at 69%. Winds will be light, with a tailwind from miles 3 to 7 and again from 17 to 20, providing a boost during those sections. To manage the heat and humidity, runners should start conservatively and consider hydration frequency to maintain performance.

Race day forecast available in 76 days
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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 10% 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