The 2026 Marathon de Longueuil 21.1 km has concluded.

Marathon de Longueuil 21.1 km

Race complete
Longueuil, QC, Canada · May 17, 2026·
clear-day61°·66° high·Light·Dry
6
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Race Day Weather

clear-day
61°at start
72° high
Light
Dry
Your goal
0:00:00

Comfortable temps, warming through the race

Starting at 61°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temperatures rising to 72°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

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Race Info

The 21.1 km half marathon starts and finishes at Colisee Jean-Beliveau on Boulevard Jacques-Cartier Est in Longueuil, on the south shore of the Saint Lawrence River. It runs out along Boulevard Jean-Paul-Vincent, loops through Parc Michel-Chartrand, then heads southwest through the residential streets near Rue Saint-Charles and Boulevard Quinn before returning past Rue Geoffrion and Boulevard Fernand-Lafontaine to the park. The course is flat, staying within roughly 25 metres of elevation the whole way, and is certified by Athletics Canada.

Race weekend

Sunday, May 17
7:45 AM10 km (6.2 mi)
8:15 AM21.1 km (13.1 mi)
8:15 AMMarathon (26.2 mi)
11:30 AM5 km (3.1 mi)
12:00 PM1 km (0.6 mi)
12:20 PM2 km (1.2 mi)
Area Map

Course Map

FAQ

When is the 2026 Marathon de Longueuil 21.1 km?

The 2026 Marathon de Longueuil 21.1 km will be held on Sunday May 17, 2026.

What is the time limit for the Marathon de Longueuil 21.1 km?

The time limit for the Marathon de Longueuil 21.1 km is 3.5 hours.

What will the weather be like for the 2026 Marathon de Longueuil 21.1 km?

The forecast calls for a high of 73°F and a low of 57°F with a 0% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 6 years of data
Avg Temp
64°F
L:62° H:66°
RunScore
6
Conditions
Rain Freq
0%
0 of 6 yrs
Wind9mph
Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
61°/66°-
6
2025
cloudy
56°/59°-
7
2024
partly-cloudy-day
65°/68°-
6
2023
cloudy
60°/62°-
7
2022
cloudy
69°/77°-
4
2016
clear-day
60°/65°-
7