Tamarack Ottawa Race Weekend– 2026 Registration & 2025 Results
Ottawa, Ontario, Canada May 23-24, 2026 Registration Open The Tamarack Ottawa Race Weekend is an annual event held in Ottawa, Ontario, Canada since 1975. Starting with fewer than 200 runners in 1975, it has grown exponentially to over 40,000 runners who participate in the various races every year making the Ottawa race weekend the…