2026 Green River Marathon
Expected Race Date
~Aug 2026
Date not yet announced — this is when the race usually runs.
Location
Colrain, MA
Quick facts
- Date
- around August 2026 (expected)
- Location
- Colrain, Massachusetts
- Distance
- Half marathon (13.1 mi)
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Not listed
The Experience
Sunday, August 23, 2026 Marlboro, Vermont to Greenfield, Massachusetts Registration for the 2026 marathon is SOLD OUT We are now only accepting registration for adaptive athletes (athletes with a disability). If you fit this category, please reach out to us through our contact page and we will provide you with the necessary information to register.…
Course Info
Course Type
Loop Course
Terrain
road
Difficulty
Rolling Hills
Quality Score
first year
no finisher counts yet
small race — neutral
needs a few years of results
limited extras
no finisher data yet
no winner time yet
typical high 77°F
Race Day Weather
5-year historical avgStart (Low)
57°
Afternoon (High)
77°
Warm — hydration strategy is key, start conservatively
0.1"
Precipitation
8 mph
Wind
75%
Humidity
Frequently asked
When is the 2026 Green River Marathon?
The 2026 Green River Marathon hasn't announced its next date yet, but it typically takes place around August 2026 (expected).
Where does the 2026 Green River Marathon take place?
It takes place in Colrain, Massachusetts.
What distances does the 2026 Green River Marathon offer?
The half marathon (13.1 miles).
Is the 2026 Green River Marathon course flat and good for a PR?
The 2026 Green River Marathon is a rolling hills, loop course course.
HalfRuns editorial — independent, no paid placement.
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