New England Green River Marathon

Greenfield, MA, USAAugust 23, 2026
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Race Day Weather

partly-cloudy-day
59°
79° high
Breezy
Dry

Warm finish, strategic pacing needed

Runners will face a temperature rise from 60°F at the start to 79°F by the finish, with average humidity at 69%. A consistent headwind will challenge runners from Mile 2 to Mile 26, necessitating pacing adjustments throughout the race. Given the warmth, a conservative start is advisable, particularly on the early descents, to conserve energy for later segments.

Race day forecast available in 138 days
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Pace Calculator

Distance: 26.2mi
0:00:00
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Common Goals:

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 59°F with a 0% 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