Old Colony Marathon

Westfield, MA, USA • May 29, 2026

Race Day Weather

partly-cloudy-day
56°
74° high
Breezy
Dry

Warming trend, moderate humidity

Runners will face a temperature rise from 56°F to 74°F, with humidity averaging 70%. A light tailwind at 10 mph will provide some assistance. Given the heat and humidity, pacing should be conservative early on, with increased hydration frequency to maintain performance.

Race day forecast available in 63 days
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Area Map

Course Map

Course Map Unavailable

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FAQ

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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.

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 Old Colony Marathon

Clear conditions throughout the day.

2025
clear-day
50°/76°-
8

2024 Old Colony Marathon

Partly cloudy throughout the day.

2024
cloudy
53°/77°-
8
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