TAMARACK OTTAWA RACE WEEKEND
TARTAN OTTAWA INTERNATIONAL MARATHON
Get ready to experience the thrill of the Tartan Ottawa International Marathon, one of Canada’s most celebrated marathons for over 50 years!
The Tartan International Ottawa Marathon is a certified course, and is a Boston Marathon qualifying event.
Sunday May 24, 2026
OTTAWA HALF MARATHON PRESENTED BY DESJARDINS
Every year, the Ottawa Half Marathon presented by Desjardins is the weekend’s most popular and fastest sell-out event!
Sunday May 24, 2026
OTTAWA 10K PRESENTED BY OTTO’S OTTAWA
The Ottawa 10K presented by Otto’s Ottawa is flat, fast, and attracts one of the world’s best fields of pro runners as well as thousands of participants from across the National Capital Region.
Saturday May 23, 2026
OTTAWA 5K
From the region’s fastest runners competing for bragging rights to teams running and walking together for a charity, this event brings together the entire running spectrum in one blast of performance and positivity in the biggest 5K race in Canada!
Saturday May 23, 2026
OTTAWA 2K
From youthful speedsters to families running and walking together, inclusivity and enthusiasm take centre stage at the Ottawa 2K. This is a race to be enjoyed together. And, yes, strollers are allowed!
Saturday May 23, 2026
OTTAWA KIDS MARATHON
The Ottawa Kids Marathon (1.2 km) is an opportunity for children ages 5 to 12 to join in the excitement of Tamarack Ottawa Race Weekend and stay active during the spring months!