Boston Marathon

Boston, MA, USA · April 20, 2026
partly-cloudy-day46°·51° high·Light·Dry
8

Race Day Weather

partly-cloudy-day
46°at start
51° high
Light
Dry

Cool start, gradual warming

Runners will face a cool start at 42°F, rising to 50°F by race's end. With a maximum wind of 8 mph from the WNW, the course will feature crosswinds in the early miles and a beneficial tailwind from miles 6 to 11 and 13 to 17. Runners should consider pacing conservatively in the first half and take advantage of the tailwind on the rolling terrain for a strong finish.

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Pace Calculator

Distance: 26.2mi
0:00:00
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Weather Adj.
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Race Plan

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Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

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Terrain Splits
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Carb Tracker
Spectator Guide
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Race Info

The Boston Marathon, established in 1897, is the world's oldest annual marathon and requires qualifying times based on age and gender. Runners start in Hopkinton and finish on Boylston Street, tackling a net downhill course with a mix of flat stretches and the iconic Newton Hills, including Heartbreak Hill. Key landmarks include Wellesley's "Scream Tunnel" and the historic finish in Copley Square.

FAQ

When is the 2026 Boston Marathon?

The 2026 Boston Marathon will be held on Monday April 20, 2026.

Is the Boston Marathon a Boston Marathon Qualifier?

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

What will the weather be like for the 2026 Boston Marathon?

The forecast calls for a high of 51°F and a low of 36°F with a 32% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 26 years of data
Avg Temp
58°F
L:53° H:60°
RunScore
7
Conditions
Rain Freq
19%
5 of 26 yrs
Wind14mph
Dew39°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
50°/55°-
8
2024
partly-cloudy-day
58°/73°-
8
2023
rain
49°/51°Light
7
2022
clear-day
49°/52°-
8
2021
cloudy
65°/70°-
8
2020
clear-day
70°/78°-
7
2019
rain
58°/69°Light
7
2018
rain
41°/50°Moderate
4
2017
partly-cloudy-day
69°/74°-
7
2016
partly-cloudy-day
55°/66°-
8
2015
cloudy
43°/46°Light
5
2014
partly-cloudy-day
52°/68°-
9
2013
partly-cloudy-day
49°/52°-
8
2012
partly-cloudy-day
73°/86°-
7
2011
partly-cloudy-day
48°/61°-
7
2010
partly-cloudy-day
50°/60°-
8
2009
partly-cloudy-day
45°/49°-
7
2008
partly-cloudy-day
50°/57°-
9
2007
rain
44°/49°Light
5
2006
partly-cloudy-day
48°/55°-
8
2005
partly-cloudy-day
62°/65°-
8
2004
partly-cloudy-day
61°/84°-
6
2003
partly-cloudy-day
51°/59°-
8
2002
fog
49°/52°-
9
2001
partly-cloudy-day
46°/50°-
8
2000
cloudy
40°/44°-
6