Runners will face a temperature range from 61°F to 72°F, with an average humidity of 46% and a dew point of 45°F. Winds will be light, coming from the NW at 8 mph, with gusts up to 19 mph. With these conditions, runners can maintain their pace without significant adjustments, though staying hydrated is always advised.

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Distance: 26.2mi

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Race Info

Marathon de Longueuil is an annual road race in Longueuil, Quebec, on the south shore of the Saint Lawrence River across from Montreal. It started in 2016 and offers distances from 1 km to the full 42.2 km marathon, starting and finishing at the Colisee Jean-Beliveau on Boulevard Jacques-Cartier Est. The course is certified by Athletics Canada and qualifies for the Boston and New York City Marathons.

Website

Race weekend

Sunday, May 17

7:45 AM10 km (6.2 mi)

8:15 AM21.1 km (13.1 mi)

11:30 AM5 km (3.1 mi)

12:00 PM1 km (0.6 mi)

12:20 PM2 km (1.2 mi)

Course Map

FAQ

When is the 2026 Marathon de Longueuil?

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

Is the Marathon de Longueuil a Boston Marathon Qualifier?

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

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

The forecast calls for a high of 73°F and a low of 57°F with a 0% chance of rain.

Historical Weather

Based on 5 years of data

Avg Temp

67°F

L:62° H:71°

RunScore

Conditions

Rain Freq

0 of 5 yrs

Wind10mph

Dew53°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Marathon de Longueuil Cloudy skies throughout the day with rain. 2025	56°/60°	-	52°
2024 Marathon de Longueuil Clearing in the afternoon. 2024	65°/71°	-	50°
2023 Marathon de Longueuil Partly cloudy throughout the day with late afternoon rain. 2023	60°/66°	-	49°
2022 Marathon de Longueuil Partly cloudy throughout the day. 2022	69°/86°	-	65°
2016 Marathon de Longueuil Clearing in the afternoon. 2016	60°/73°	-	48°