Canada 路 Road marathon 路 42.195 km
Tamarack Ottawa International Marathon
Ottawa, Ontario, Canada
Ottawa's road marathon sets off from City Hall on the Sunday morning of Tamarack Ottawa Race Weekend. The 2027 start is at 7:00 am, giving breakfast rather more urgency than usual. Run Ottawa provides the current course and elevation maps, and offers an adaptive athlete programme alongside general entry. There is a seven-hour finishing limit and an intermediate checkpoint. Check both when planning a run-walk approach, and arrange any guide or support-runner requirements through the organiser before race day.
AthRecs race guide 路 Updated
Upcoming dates
Planning your race weekend? These are the announced dates through 2027. Follow the organiser鈥檚 link for the latest date and race-day details. All dates and start times are local.
At a glance
- City / location
- Ottawa
- Province
- Ontario
- Distance
- 42.195 kilometres / 26.2 miles
- Surface
- Road
- Course profile
- See the official elevation map for individual climbs.
- Approximate field
- About 3,900Finishers 路 2026
Rounded from Race Results Weekly's 3,863 full-marathon finishers in 2026; shorter races excluded.
How to enter Tamarack Ottawa International Marathon
These are the organiser鈥檚 entry routes. Check the linked page for the edition, opening dates, eligibility, fees and current availability.
General entry
Enter through the organiser's registration link; check the current edition and availability.
Official entry informationAdaptive athlete programme
Register through the main platform and indicate accessibility needs; eligible guide or support-runner arrangements are explained by Run Ottawa.
Official entry informationRoute and course
Certified road course starting at Ottawa City Hall; use the organiser's interactive map for the current route.
Race-day planning
Check which edition each detail applies to before making your plans. Follow the linked instructions for the latest arrangements.
- 2027 start
- 7:00 am, Ottawa City Hall. 2027 start information
- Time limit
- 7 hours; an intermediate checkpoint also applies. Time limit information
- Minimum age
- 18. Minimum age information
Past races and results
Official results archiveOpen the organiser鈥檚 results to find a runner, club or published category standing. At festivals with several distances, select the marathon results.
2026 Tamarack Ottawa International Marathon
Full 2026 resultsElvis Cheboi won the men's race, while Abeba Aregawi recorded 2:23:12 in the women's marathon. Rory Linkletter was the fastest Canadian man and placed third overall; 脡lissa Legault was the fastest Canadian woman.
Men
Elvis Cheboi won in 2:09:22.
View result detailsWomen
Abeba Aregawi recorded 2:23:12.
View result detailsTop Canadian man
Rory Linkletter was the fastest Canadian man in 2:09:43.
View result detailsTop Canadian woman
脡lissa Legault was the fastest Canadian woman in 2:29:12.
View result details2025 Tamarack Ottawa International Marathon
Full 2025 resultsThe AIMS event-winner archive records victories for Albert Korir and Mercy Chelengat.
Men
Albert Korir won in 2:08:22.
View result detailsWomen
Mercy Chelengat won in 2:23:33.
View result detailsRace news, photos and video
Common questions
When is Tamarack Ottawa International Marathon?
Confirmed upcoming dates: 30 May 2027. Dates are local to the race.
How do I enter Tamarack Ottawa International Marathon?
General entry: Enter through the organiser's registration link; check the current edition and availability. Adaptive athlete programme: Register through the main platform and indicate accessibility needs; eligible guide or support-runner arrangements are explained by Run Ottawa.
Where is Tamarack Ottawa International Marathon and how far is it?
Tamarack Ottawa International Marathon takes place in Ottawa, Ontario, Canada. This guide covers the 42.195 km full marathon (26.2 miles). Surface: Road
What is the Tamarack Ottawa International Marathon course like?
Certified road course starting at Ottawa City Hall; use the organiser's interactive map for the current route. See the official elevation map for individual climbs.
How big is the field at Tamarack Ottawa International Marathon?
The approximate field is About 3,900, based on Finishers for 2026. Rounded from Race Results Weekly's 3,863 full-marathon finishers in 2026; shorter races excluded. Entrants, starters and finishers are different measures.
Where can I find past Tamarack Ottawa International Marathon results?
The past races and results section links to the organiser鈥檚 results. Select the distance and edition for participant searches and published category standings.
Sources and race information
AthRecs is independent of the race organiser. This guide brings together the linked race information, results and reports. Source review: . Historical details are labelled by edition; current entry availability and final instructions remain with the organiser.
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