New England Green River Marathon

Greenfield, MA, USA · August 22, 2027
partly-cloudy-day62°→ 77° finish·Light·Dry
5
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Race Day Weather

partly-cloudy-day
62°at start
77° at finish
Light
Dry
Your goal
0:00:00

Warm finish, adjust pace wisely

Runners will face a temperature rise from 62°F at the start to 77°F at the finish, with humidity averaging 70%. A light wind from the WNW will create crosswinds early, shifting to a tailwind from miles 3 to 7, then returning to crosswinds and headwinds in the latter stages. It’s advisable to pace conservatively early on and hydrate frequently as temperatures increase, especially in the warm finish.

This course drops 1,457 ft from start to finish, so we look at it at 3 points, not just the start line. In a typical year, at 9:00/mi, you start at 62° and finish around 10:55 AM in 77°; typical start-line conditions say 73° then.

Race day forecast available in 279 days
Along your raceStart line only
partly-cloudy-night6
partly-cloudy-night7
partly-cloudy-day6
Start
partly-cloudy-day5
mi 7
partly-cloudy-day4
mi 13
partly-cloudy-day4
Finish
partly-cloudy-day3
partly-cloudy-day3
partly-cloudy-day3
partly-cloudy-day3
partly-cloudy-day3

Pace Calculator

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Race Plan

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A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

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Weather Splits
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Carb Tracker
Spectator Guide
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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 2027 New England Green River Marathon?

The 2027 New England Green River Marathon will be held on Sunday August 22, 2027.

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 2027 New England Green River Marathon?

The forecast calls for a high of 79°F and a low of 61°F with a 9% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 8 years of data
Avg Temp
65°F
L:60° H:70°
RunScore
5
Conditions
Rain Freq
25%
2 of 8 yrs
Wind3mph
Dew60°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
65°/66°Light
5
2025
cloudy
65°/72°-
4
2024
partly-cloudy-day
53°/73°-
6
2023
cloudy
64°/72°-
5
2022
partly-cloudy-day
56°/67°-
6
2021
cloudy
62°/65°-
6
2019
partly-cloudy-day
47°/69°-
7
2018
rain
72°/79°Light
3