The 2026 event has concluded.

Boston Marathon

Boston, MA, USA · April 20, 2026
partly-cloudy-day45°·54° high·Breezy·Dry
8

Race Day Weather

partly-cloudy-day
45°at start
54° high
Breezy
Dry

Cool morning, steady tailwinds

Runners will face a temperature ranging from 43°F at the start to a pleasant 54°F by the finish, with average humidity at 42%. Wind will be predominantly a tailwind, peaking at 14 mph, providing a boost especially from miles 6-14 and 17-27. Given the cool temperatures, runners should maintain their pace without concern for overheating, focusing on hydration as they navigate the rolling terrain.

clear-day7
clear-day7
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day7
cloudy8
partly-cloudy-day8
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
cloudy8

Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
Weather Adj.
Common Goals:

Get forecast alerts for Boston Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Plan

Get your personalized Boston Marathon race plan

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.

Race Conditions
Terrain Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

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 54°F and a low of 35°F with a 0% 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