B.A.A. Boston Half Marathon

Boston, MA, USA · November 8, 2026
partly-cloudy-day49°·53° high·Breezy·Dry
8

Race Day Weather

partly-cloudy-day
49°at start
56° high
Breezy
Dry

Cool start, mild finish

Runners will face a slight temperature increase from 49°F at the start to 51°F at the finish, with an average humidity of 76%. Wind from the WNW will be a factor, especially with a headwind during miles 2 and 11, and a tailwind from miles 9 to 10. Runners should consider pacing adjustments during the headwinds and stay hydrated throughout, especially given the humidity.

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Pace Calculator

Distance: 13.1mi
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Race Info

The Boston Half is a 13.1-mile road race run by the Boston Athletic Association on a Sunday in early November. It starts and finishes in Franklin Park, with the finish on Pierpont Road, and follows the Emerald Necklace parks past the Arnold Arboretum, Jamaica Pond and Olmsted Park. Out-and-back sections reach toward Fenway along the Riverway and down Morton Street toward Mattapan. It is the closing race of the B.A.A. Distance Medley, after the Boston 5K and B.A.A. 10K.

FAQ

When is the 2026 B.A.A. Boston Half Marathon?

The 2026 B.A.A. Boston Half Marathon will be held on Sunday November 8, 2026.

What is the time limit for the B.A.A. Boston Half Marathon?

The time limit for the B.A.A. Boston Half Marathon is 3 hours.

What will the weather be like for the 2026 B.A.A. Boston Half Marathon?

The forecast calls for a high of 56°F and a low of 45°F with a 28% chance of rain.

Historical Weather

Based on 24 years of data
Avg Temp
60°F
L:54° H:60°
RunScore
8
Conditions
Rain Freq
29%
7 of 24 yrs
Wind10mph
Dew46°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
52°/56°-
8
2024
partly-cloudy-day
39°/52°-
8
2023
partly-cloudy-day
33°/41°-
7
2022
rain
52°/52°Light
7
2020
partly-cloudy-day
57°/61°-
8
2019
partly-cloudy-day
59°/66°-
9
2018
cloudy
68°/76°-
8
2017
partly-cloudy-day
70°/74°Light
5
2016
rain
55°/57°Moderate
5
2015
partly-cloudy-day
54°/64°-
7
2014
clear-day
48°/57°-
9
2013
clear-day
55°/60°-
8
2012
partly-cloudy-day
53°/56°-
9
2011
clear-day
68°/81°-
8
2010
clear-day
50°/58°-
9
2009
partly-cloudy-day
47°/60°-
8
2008
partly-cloudy-day
53°/61°-
9
2007
cloudy
56°/58°Light
8
2006
clear-day
48°/64°-
8
2005
rain
50°/51°Light
7
2004
partly-cloudy-day
60°/65°-
8
2003
cloudy
55°/56°Light
6
2002
rain
56°/57°Light
7
2001
cloudy
55°/56°-
9