Tamarack Homes Ottawa International Marathon Weekend

About the Event

The Ottawa International Marathon stands out as a premier road racing event in Canada, serving as the cornerstone of Tamarack Ottawa Race Weekend. Each year, this race unfolds through the heart of Canada's vibrant national capital, offering runners an immersive journey past historic sites, picturesque waterways, and lively neighborhoods. The course weaves around some of Ottawa’s most recognizable landmarks, providing a scenic backdrop that showcases both the city’s natural beauty and its rich cultural heritage.
Renowned for its impeccable organization and enthusiastic crowd support, the marathon creates a welcoming environment where runners from all corners of Canada and beyond come together to celebrate their passion for running. Whether participants are aiming for personal records or Boston qualifying times, every runner finds inspiration in the supportive atmosphere that permeates throughout the event. The race not only challenges athletes with its varied terrain but also rewards them with breathtaking views and an unforgettable experience.
As runners traverse this picturesque course, they encounter a mix of flat stretches along serene waterways and gentle inclines through charming residential areas, culminating in a memorable finish line celebration. This unique blend of history, culture, and sporting excellence makes the Ottawa International Marathon a must-attend event for any serious runner looking to immerse themselves in one of North America’s most beautiful capital cities.

Races Offered

17K Challenge

May 30, 2027

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Distance — 17K

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Type — Running

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322 days remaining

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$101.89

36.1K Challenge

May 30, 2027

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Distance — 36.1K

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Type — Running

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322 days remaining

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$135.09

59.2K Challenge

May 30, 2027

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Distance — 59.2K

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Type — Running

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322 days remaining

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$183.17

Ottawa 10K

May 30, 2027

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Distance — 10K

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Type — Running

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322 days remaining

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$51.52

Ottawa 2K

May 30, 2027

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Distance — 2K

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Type — Running

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322 days remaining

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$24.04

Ottawa 5K

May 30, 2027

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Distance — 5K

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Type — Running

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322 days remaining

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$34.34

Ottawa Half Marathon

May 30, 2027

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Distance — 21.1K

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Type — Running

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322 days remaining

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$64.11

Tamarack Homes Ottawa International Marathon

May 30, 2027

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Distance — 42.2K

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Type — Running

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322 days remaining

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$95.02

Weather History

These values represent the 3-year monthly averages for May in Ottawa, Ontario.

thermostat Temperature

8.3° / 19.1°

wb_sunny Feels like

5.5° / 16.8°

light_mode Avg sunshine hours

9h 36m

water_drop Avg rainfall

2.9 mm

ac_unit Avg snowfall

—

air Avg wind speed

10.2 km/h (Light breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (4.2)

humidity_mid Humidity

69.2%

wb_twilight Sunrise

05:31

nightlight Sunset

20:26

About Ottawa, Ontario

Learn more about the host city, Ottawa, Ontario.

Ottawa is the capital city of Canada. It is located in the southeastern portion of the province of Ontario, at the confluence of the Ottawa River and the Rideau River. Ottawa borders Gatineau, Quebec, and forms the core of the Ottawa–Gatineau census metropolitan area (CMA) and the National Capital Region (NCR). As of 2021, Ottawa had a city population of 1,017,449 and a metropolitan population of 1,488,307, making it the fourth-largest city and fourth-largest metropolitan area in Canada.