Tamarack Ottawa Race Weekend 2025

• Multiple race options: 2K, 5K, 10K, Half Marathon, Marathon, and Marathon Relay for teams.
• Strong charity focus, raising over $1 million for 75 charities; extensive medical support with 250 volunteers.
• Eco-friendly practices, including diverting 555,000 drinking cups from landfills.
• Races start at Ottawa City Hall; race kits available at Carleton University Fieldhouse.
• Participants get Asics Premium Runkeeper Go for training; preferred hotel rates available.

The Tartan Ottawa International Marathon is part of the prestigious Tamarack Ottawa Race Weekend, celebrated as Canada’s largest and most iconic running event. Set against the stunning backdrop of Canada’s capital city, this marathon offers a unique opportunity to explore Ottawa’s rich history and vibrant culture through its picturesque 42.2 km course. Known for its slightly rolling elevation, the marathon presents a formidable but rewarding challenge for runners of all levels. What sets the Ottawa Marathon apart is its World Athletics Gold Label status, a testament to its high standards and international acclaim, drawing elite athletes and spirited amateurs alike. The marathon weaves through Ottawa's scenic streets, past landmarks such as the historic Parliament Hill and along the serene Rideau Canal, a designated UNESCO World Heritage Site. Participants are welcomed by enthusiastic crowds, creating an electric atmosphere that resonates throughout the city. The marathon also encourages charitable involvement through the Desjardins Charity Challenge, contributing millions to various causes, thus combining athletic achievement with community impact. It is an exceptional event that offers not just a race, but a complete cultural and charitable experience, making it a must-run for those seeking both personal bests and memorable moments.

Expect temperatures between 50-70°F (10-21°C) during the Tamarack Ottawa Race Weekend in late May, with mornings seeing cooler starts around 50-52°F (10-11°C). Runners should be prepared for light rain given the chance of precipitation, though conditions are generally comfortable for running. Enjoy nearly 15 hours of daylight, providing ample time to explore Ottawa's scenic routes.

The Tamarack Ottawa Race Weekend's Ottawa Marathon offers runners a captivating 42.195 km (26.2 mi) journey through the heart of Canada's capital. This loop course is a blend of rolling hills and flat stretches, providing a balanced challenge for marathoners. With an elevation range from 173 to 247 feet (52 to 75 meters), the race presents a total elevation gain of 586 feet (178 meters) and a loss of 578 feet (176 meters), creating an engaging yet manageable terrain.

As you navigate the course, you'll pass iconic landmarks like the Rideau Canal, a UNESCO World Heritage Site, where enthusiastic spectators gather to cheer you on. The route is thoughtfully designed, with detailed maps and 3D videos available for runners to explore beforehand.

The rolling hills add a unique challenge, yet the moderate elevations make it a fast course for those aiming for personal bests. Held in late May, the race often features temperatures between 54°F (12°C) and 74°F (23°C), providing a slightly warm but invigorating atmosphere. With around 200,000 spectators lining the streets and a wave start system to ensure smooth pacing, the Ottawa Marathon is celebrated for its scenic beauty, energetic crowd support, and well-organized execution, making it a must-run experience for marathon enthusiasts.

Exploring Ottawa during the Tamarack Ottawa Race Weekend offers a delightful mix of cultural and natural attractions. The city boasts a comprehensive public transit system, including the OC Transpo bus network and O-Train lines, making it easy to navigate. For a unique perspective, hop on the Aqua-Taxi from May to October for a scenic ride across the Ottawa River. Staying downtown ensures you're close to both the race venues and the city's vibrant attractions.

Ottawa's charm lies in its rich history and lively cultural scene. Begin your journey at Parliament Hill for an insightful tour of Canada's political heart, then wander through the bustling ByWard Market, where you can savor local delicacies like Italian sandwiches and the famous Obama cookie. Don't miss the Rideau Canal, a UNESCO World Heritage Site that transforms into the world's largest skating rink in winter. Art enthusiasts will appreciate the National Gallery of Canada, home to an impressive array of Canadian and Indigenous art.

The city comes alive with festivals and events throughout the year. Winterlude in February offers enchanting snow sculptures and skating on the canal, while Canada Day celebrations on July 1 light up the city with fireworks and live performances. Music aficionados can enjoy the Ottawa Jazz Festival and Bluesfest, or delve into the vibrant world of animation at the Ottawa International Animation Festival. Whether you're a history buff, art lover, or festival-goer, Ottawa has something to captivate every visitor.