Tamarack Ottawa Race Weekend
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Tamarack Ottawa Race Weekend : Overview
Tamarack Ottawa Race Weekend 2026 is scheduled for May 23-24, 2026 in Ottawa, Ontario, Canada. The event includes multiple road races, a festival plaza, an expo, and media coverage including a race weekend livestream and an event app. Event services listed include medical services and safety, an adaptive athlete program, a pace team, and past race results and photos.
The weekend also features elite athlete information and an organised charity program called the Desjardins Charity Challenge. Organisers maintain a media centre, news and blog pages, and resources for runners and walkers such as an information/FAQ page and live results and runner tracking.
Events and challenges
Races on the weekend include the Tartan Ottawa International Marathon, the Ottawa Half Marathon presented by Desjardins, the Ottawa 10K presented by Otto’s Ottawa, the Ottawa 5K, the Ottawa 2K, and the Ottawa Kids Marathon presented by Maverick’s Donuts.
Associated multi-race challenges listed are The Ottawa 59.2 km Challenge, The Ottawa 36.1 km Challenge, and The Ottawa 17 km Challenge. Sponsors, volunteer opportunities, and a race shop are listed as part of the event infrastructure. Visit the organization's website for the most recent information.