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
Dry
Cool conditions, steady wind
Runners will face a cool start with temperatures ranging from 48°F to 50°F. A steady wind from the NE at 13 mph will add a slight chill, especially with high humidity at 96%. Given the conditions, pacing should remain conservative to maintain energy throughout the race.
Pre-raceRace windowPost-race
Pace Calculator
Distance: 3.1mi
0:00:00
HH:MM:SS
Get forecast alerts for Boston 5K
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
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 0% 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° |
More MA Races
Harpoon 5 Miler
2027-05-15 · Boston, MA, USA
Tree House Brewing Company Half Marathon
2026-09-13 · Deerfield, MA, USA
Boston's Run To Remember Half Marathon
2027-05-30 · Boston, MA, USA
Falmouth Road Race
2026-08-16 · Falmouth, MA, USA
New England Green River Marathon
2026-08-23 · Greenfield, MA, USA
Beantown Marathon
2026-09-06 · Hingham, MA, USA