Ottawa Marathon
Ottawa, ON, Canada · May 24, 2026
Race Day Weather
55°at start
69° high
Breezy
Dry
Mild temps, steady winds
Runners will face temperatures starting at 53°F, rising to a peak of 68°F. Winds will be from the SW at 10 mph, with gusts up to 23 mph. With humidity at 63% and no rain expected, runners should maintain a steady pace and stay hydrated throughout the race.
Race day forecast available in 11 days
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Distance: 26.2mi
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Race Info
The Tartan Ottawa International Marathon is Canada’s fastest marathon. This race attracts thousands of participants, including a world-class contingent of pro-athletes every year. The Tartan Ottawa International Marathon is a World Athletics Elite Label Race and one of Canada’s largest Boston Qualifiers. Source
FAQ
When is the 2026 Ottawa Marathon?
The 2026 Ottawa Marathon will be held on Sunday May 24, 2026.
Is the Ottawa Marathon a Boston Marathon Qualifier?
Yes, the Ottawa Marathon is an official Boston Marathon qualifier.
What will the weather be like for the 2026 Ottawa Marathon?
The forecast calls for a high of 69°F and a low of 53°F with a 0% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.
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