Tamarack Ottawa Race Weekend
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Tamarack Ottawa Race Weekend 2026
Tamarack Ottawa Race Weekend takes place in Ottawa, Ontario, Canada on May 23-24, 2026. The weekend consists of multiple road races for different age groups and distances, plus challenge options that combine events over the weekend.
Races, challenges and event services
The weekend includes these races:
- 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
Challenges listed for the weekend include the Ottawa 59.2 km Challenge, the Ottawa 36.1 km Challenge, and the Ottawa 17 km Challenge. Event programming and services mentioned include an Adaptive Athlete Program, a Pace Team, medical services and safety provisions, live results and runner tracking, an event Expo, a Festival Plaza with the Beyond the Pale Beer Garden, a race weekend app, and a livestream. The event also runs a Desjardins Charity Challenge and notes green initiatives. Visit the organization's website for the most recent information.