Tamarack Homes Ottawa International Marathon
Ottawa's international marathon anchors Tamarack Ottawa Race Weekend with a sold-out urban course, World Athletics label status, and Boston value.
Quick facts
- World Athletics label road race and Boston-qualifying marathon.
- The 2026 marathon is marked sold out.
- Official result link is available through Run Ottawa.
Is registration open for the 2027 Tamarack Homes Ottawa International Marathon?
Registration for the 2027 Tamarack Homes Ottawa International Marathon is open.
About the Tamarack Homes Ottawa International Marathon
Ottawa is one of Canada's highest-profile spring marathon weekends, with elite relevance, a Boston-qualifying course, and heavy runner demand.
Course
The course starts near Ottawa City Hall and moves through the capital's road network with river, city, and crowd-support sections.
Race-day weather
Late May can be ideal but is not guaranteed. Runners should be ready for cool starts, sun exposure, and wind near river corridors.
Past Tamarack Homes Ottawa International Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Sunday, May 30, 2027 | Upcoming | — |
| 2026 | Sunday, May 24, 2026 | Completed | Open results |
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Tamarack Homes Ottawa International Marathon FAQ
When is the Tamarack Homes Ottawa International Marathon?
The 2027 Tamarack Homes Ottawa International Marathon is on Sunday, May 30, 2027.
Is registration open for the 2027 Tamarack Homes Ottawa International Marathon?
Registration for the 2027 Tamarack Homes Ottawa International Marathon is open. View the official registration details at runottawa.ca.
Is Tamarack Homes Ottawa International Marathon a Boston qualifier?
Yes. Tamarack Homes Ottawa International Marathon is a Boston Marathon qualifier. To use the result, you must run the certified full-marathon course within the qualifying window and meet the current standard for your age and gender. Meeting the standard lets you apply but does not guarantee entry, and net-downhill courses can receive a time adjustment under current B.A.A. rules. Review the Boston qualifying times and downhill-course rules, or browse upcoming Boston qualifier marathons.
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