Toronto Waterfront Marathon

Toronto, ON, Canada · October 17, 2027·
partly-cloudy-day53°·54° high·Breezy·Dry
9
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Race Day Weather

partly-cloudy-day
53°at start
56° high
Breezy
Dry
Your goal
0:00:00

Cool conditions, strategic pacing needed

Runners will face a steady temperature from 53°F at the start to 54°F at the finish, with a light wind from the WSW at 15 mph. Humidity sits at 71%, so maintaining hydration is crucial. The toughest sections will be in Miles 2 and 5-8 with a headwind, while a beneficial tailwind will assist in Miles 9-21, allowing for potential speed boosts during those stretches.

Race day forecast available in 332 days
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Pace Calculator

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Race Plan

Get your personalized Toronto Waterfront Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Toronto Waterfront Marathon runs through downtown Toronto and along the Lake Ontario waterfront every October, drawing more than 30,000 runners across the marathon, half marathon and 5K. The 42.195-kilometre course starts on Yonge Street near Elm Street and finishes on Bay Street near Queen Street, and its flat profile has made it a frequent stop for runners chasing Boston qualifying times. First run in 1999, the race carries World Athletics Elite Label status and serves as the Athletics Canada National Marathon Championships.

Race weekend

Saturday, October 16
9:00 AM5K (3.1 mi)
Sunday, October 17
8:00 AMMarathon (26.2 mi)
8:00 AMHalf Marathon (13.1 mi)

FAQ

When is the 2027 Toronto Waterfront Marathon?

The 2027 Toronto Waterfront Marathon will be held on Sunday October 17, 2027.

Is the Toronto Waterfront Marathon a Boston Marathon Qualifier?

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

What is the time limit for the Toronto Waterfront Marathon?

The time limit for the Toronto Waterfront Marathon is 6.5 hours.

What will the weather be like for the 2027 Toronto Waterfront Marathon?

The forecast calls for a high of 60°F and a low of 53°F with a 12% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 25 years of data
Avg Temp
56°F
L:53° H:60°
RunScore
7
Conditions
Rain Freq
24%
6 of 25 yrs
Wind8mph
Dew48°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
41°/57°-
9
2025
clear-day
67°/71°-
5
2024
clear-day
48°/63°-
8
2023
partly-cloudy-day
47°/51°-
9
2022
cloudy
47°/54°-
10
2019
partly-cloudy-day
47°/56°-
9
2018
cloudy
35°/40°-
10
2017
clear-day
53°/67°-
7
2016
partly-cloudy-day
64°/70°Light
5
2015
cloudy
37°/41°-
10
2014
partly-cloudy-day
38°/43°-
10
2013
clear-day
40°/51°-
10
2012
rain
58°/62°Light
6
2011
cloudy
49°/55°-
8
2010
clear-day
50°/57°-
9
2009
rain
63°/66°Light
5
2008
partly-cloudy-day
64°/70°-
5
2007
clear-day
59°/68°-
6
2006
rain
64°/66°Light
5
2005
rain
65°/71°Light
4
2004
clear-day
55°/66°-
7
2003
partly-cloudy-day
52°/61°-
8
2002
rain
67°/70°Light
5
2001
clear-day
54°/66°-
6
2000
cloudy
54°/59°-
9