The 2026 Boston 5K has concluded.
Boston 5K
Race complete
Boston, MA, USA · April 18, 2026
Race Day Weather
49°at start
50° high
Breezy
Light rain
Cool temps, light rain expected
Runners will face a cool start with temperatures ranging from 48°F to 50°F. Light rain is anticipated throughout, with a steady wind from the NE at 15 mph. With high humidity at 96%, a conservative pacing strategy is advised to mitigate the effects of the moisture and wind.
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Distance: 3.1mi
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FAQ
When is the 2026 Boston 5K?
The 2026 Boston 5K will be held on Saturday April 18, 2026.
What is the time limit for the Boston 5K?
The time limit for the Boston 5K is 1 hours.
What will the weather be like for the 2026 Boston 5K?
The forecast calls for a high of 50°F and a low of 44°F with a 100% chance of rain.
Historical Weather
Based on 3 years of data
Avg Temp
51°F
L:50° H:51°
RunScore
Conditions
Rain Freq
33%
1 of 3 yrs
Wind11mph
Dew47°F
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2026 | | 48°/49° | Light | 48° | |
2024 |  | 52°/53° | - | 44° | |
2023 | | 50°/51° | - | 49° |
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