Tamarack Ottawa Race Weekend

MAY

23-24

2026

Tamarack Ottawa Race Weekend on May 23 and 24, 2026 offers marathon, half, 10K, 5K, 2K and kids races plus multi race challenges. Expect a lively race village, elite competition, charity fun and full runner services for all abilities.

23-24 May 2026

Ottawa, Ontario

Website

Marathon Half Marathon 10 kilometers 5 kilometers

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Tamarack Ottawa Race Weekend 2026

Tamarack Ottawa Race Weekend is scheduled for May 23-24, 2026 in Ottawa, Ontario, Canada. The event includes an expo and a Festival Plaza with a beer garden. Organizers provide runner services such as an adaptive athlete program, a pace team, medical services and safety, live results and runner tracking, and an event app. The weekend also features elite athlete information and a prize purse, a charity program called the Desjardins Charity Challenge, and volunteer opportunities.

Races and challenges

42.2K Tartan Ottawa International Marathon
21.1K Ottawa Half Marathon presented by Desjardins
10K Ottawa 10K presented by Otto’s Ottawa
5K Ottawa 5K
2K Ottawa 2K
Kids Ottawa Kids Marathon

The event offers multi-distance challenges that combine races into longer totals, including a 59.2 km challenge, a 36.1 km challenge, and a 17 km challenge. Training resources and programs are available, including an official training app partnership. Visit the organization's website for the most recent information.

Marathon

Marathon (42.2 Kilometers)

Half Marathon

Half Marathon (21.1 Kilometers)

10 km

10k

5 km