Old Colony Marathon

Westfield, MA, USA · May 29, 2026
partly-cloudy-day57°·71° high·Light·Dry
9

Race Day Weather

partly-cloudy-day
57°at start
73° high
Light
Dry

Comfortable temps, big temp swing

Mild 57°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 73°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. Moderate humidity at 69% is worth noting for effort level, especially in later miles.

Race day forecast available in 1 day
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Race Info

Area Map

Course Map

FAQ

When is the 2026 Old Colony Marathon?

The 2026 Old Colony Marathon will be held on Friday May 29, 2026.

Is the Old Colony Marathon a Boston Marathon Qualifier?

Yes, the Old Colony Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 Old Colony Marathon?

The forecast calls for a high of 75°F and a low of 55°F with a 10% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
77°F
L:52° H:77°
RunScore
7
Conditions
Rain Freq
0%
0 of 2 yrs
Wind11mph
Dew48°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
clear-day
50°/76°-
8
2024
cloudy
53°/77°-
8