Tamarack Ottawa Race Weekend
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Event overview
Tamarack Ottawa Race Weekend takes place in Ottawa, Ontario, Canada on May 23-24, 2026. The weekend includes multiple road races, race services, and event features across the city.
Event services and facilities listed for the weekend include an expo, a race weekend app, a livestream, live results and runner tracking, medical services and safety, an adaptive athlete program, and a pace team. The event also includes a festival area named Festival Plaza and Beyond the Pale Beer Garden. There is an organized charity program called the Desjardins Charity Challenge. Information and resources are available for elite athletes, including an elite athlete policy and a prize purse.
Races and challenges
- Tartan Ottawa International Marathon - 42.2K
- Ottawa Half Marathon presented by Desjardins - 21.1K
- Ottawa 10K presented by Otto's Ottawa - 10K
- Ottawa 5K - 5K
- Ottawa 2K - 2K
- Ottawa Kids Marathon - Kids
The weekend also offers multi-race challenges with combined distances: the Ottawa 59.2 km Challenge, the Ottawa 36.1 km Challenge, and the Ottawa 17 km Challenge. Visit the organization's website for the most recent information.
