Tamarack Ottawa Race Weekend 2026

About

Tamarack Ottawa Race Weekend is Canada's largest running festival, attracting close to 47,000 participants annually across multiple race distances. The 2026 edition features a newly redesigned ultra-flat, ultra-fast course perfect for personal bests and Boston qualifiers.

Race Weekend Schedule

Saturday, May 23, 2026:

• Kids Marathon
• Ottawa 2K presented by ASICS Runkeeper
• Ottawa 5K presented by ASICS Runkeeper

Sunday, May 24, 2026:

• Ottawa 10K presented by Otto's Ottawa (7:00 AM)
• Ottawa Half Marathon presented by Desjardins (7:00 AM)
• Tamarack Homes Ottawa International Marathon (7:00 AM)

Course Highlights

The newly redesigned course offers an ultra-flat profile through downtown Ottawa, making it ideal for:

• Chasing personal records
• Securing Boston Marathon qualifiers
• First-time marathoners
• Scenic city running

Important Notes

• Marathon Status: The 2026 Tamarack Homes Ottawa International Marathon is SOLD OUT
• Other race distances may still have availability
• Start location: Ottawa City Hall, 110 Laurier Avenue W

About the Event

Ottawa Race Weekend has established itself as one of Canada's premier running events, combining competitive racing with a festive atmosphere in the heart of the nation's capital.