Marathon2027

Tamarack Ottawa Race Weekend

Sunday, May 30, 2027

Ottawa · Confirmed with the organizer, checked October 8, 2026

Save it in The Corral: a countdown to the start, and a cheer link your people open without the app. They pick a spot and leave an audio cheer that plays as you reach it.

Free on the App Store

Registration

Official site: runottawa.ca

About the race

Across the Ottawa River, past Parliament Hill. Canada's biggest marathon weekend.

Past race days

2025Sunday, May 25
2024Sunday, May 26
2023Sunday, May 28
2022Sunday, May 29
2021Not held
2020Not held

More races coming up

Niagara Falls 10KOct 25
Niagara Falls HalfOct 25
Niagara Falls International MarathonOct 25
Vancouver Sun Run 10KApr 18, 2027
Mississauga MarathonApr 25, 2027
BMO Vancouver Half MarathonMay 2, 2027