Ottawa Marathon 2025

• Scenic course: Runs past national landmarks, Rideau Canal, and along Ottawa River.
• Community support: Enthusiastic local cheering and assistance from volunteers.
• Unique challenges: Lumberjack and Voyageur offer multi-distance runs over two days.
• Logistics: Part of Tamarack Ottawa Race Weekend; includes various race distances.
• Course features: Frequent hydration/nutrition stations, medical support, and entertainment.

The Ottawa Marathon, a highlight of the Tamarack Ottawa Race Weekend, stands as one of Canada's premier running events, drawing runners from all corners of the globe. This marathon's course uniquely weaves through Ottawa's most iconic landmarks, including the majestic Parliament Hill, the serene Dow’s Lake, and the picturesque paths along the Ottawa River, offering a scenic and culturally immersive 26.2-mile journey.

Celebrating its 50th anniversary in 2024, the marathon has grown from a modest gathering to Canada's largest multi-day racing event, with over 33,000 participants. The enthusiastic community support, featuring the spirited Extra Mile Crew, creates an electric atmosphere that propels runners towards the finish line.

Beyond the race itself, the Ottawa Marathon is a force for good, with the Desjardins Charity Challenge raising over $1 million for more than 75 charities in 2023. Professionally organized with extensive medical support, the event ensures a safe and enjoyable experience for all participants. Moreover, it significantly boosts the local economy, contributing $14 million and drawing 200,000 spectators.

The Ottawa Marathon's blend of cultural richness, historical significance, and community spirit makes it a must-run event on any marathoner’s calendar.

Expect temperatures between 54-73°F (12-23°C) with high humidity for the Ottawa Marathon in late May. Mornings typically start around 59°F (15°C) with light winds and mostly cloudy skies. While rainfall chances are present, 2025 forecasts indicate partly cloudy conditions with no rain expected.

The Ottawa Marathon offers runners a scenic and fast-paced journey through the heart of Canada's capital and into Gatineau, Quebec. Starting along the serene Rideau Canal, a UNESCO World Heritage site, the course features a flat opening stretch perfect for setting a strong pace. As you advance, you'll encounter a few rolling inclines and declines, with a total elevation gain of 586 feet, providing just the right amount of challenge for those looking to test their stamina.

Throughout the race, you'll pass iconic landmarks like the Pretoria Bridge, crossed twice, adding a rhythmic touch to your run. The vibrant neighborhoods of Hintonburg and Westboro are packed with enthusiastic supporters, creating an electric atmosphere that propels you forward. As you hit the 28-29 km mark, you'll glide past Sussex Drive, catching glimpses of the Prime Minister's and Governor General’s residences.

The course also treats runners to views of the National Art Gallery, Museum of History, and the National War Museum, ensuring a culturally rich experience. With its mix of historical sites, supportive crowds, and picturesque routes, the Ottawa Marathon is a must-run for those seeking both beauty and challenge in their marathon endeavors.

Ottawa, with its rich cultural tapestry and scenic beauty, offers much more than just a marathon experience. As you lace up for the Ottawa Marathon, take time to immerse yourself in the city’s vibrant offerings.

Start your exploration at Parliament Hill, the heart of Canadian politics, where you can witness the changing of the guard or tour the historic buildings. Nearby, ByWard Market awaits with its bustling atmosphere, offering everything from local delicacies like beaver tails to the famous Obama cookie. For a touch of serenity, stroll or cruise along the Rideau Canal, a UNESCO World Heritage site that beautifully showcases Ottawa’s natural charm.

Art enthusiasts shouldn’t miss the National Gallery of Canada, home to an impressive collection of Canadian art, including pieces by the Group of Seven and Indigenous artists. Meanwhile, the National Arts Centre provides a dynamic cultural scene with performances ranging from theater to music. Dive into local life in The Glebe, a trendy neighborhood brimming with cultural events and lively festivals, or unwind with a drink on a floating tiki bar tour along the Ottawa River.

Ottawa’s efficient public transport and pedestrian-friendly layout make it easy to navigate, so whether you’re exploring chic Chinatown or enjoying a free walking tour, the city is at your feet. With these experiences, your trip to Ottawa for the marathon will be as memorable as the race itself.