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, headwind challenges early

Runners will face a temperature rise from 60°F at the start to a warm 79°F by the finish, coupled with an average humidity of 69%. A consistent headwind will challenge runners between miles 2-21, particularly on exposed stretches, necessitating pacing adjustments. As the temperature climbs, hydration frequency should increase, especially after mile 18, where a significant descent may provide brief relief.

Race day forecast available in 149 days
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Pace Calculator

Distance: 26.2mi
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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.

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