Ottawa’s First Ironman Competition to Shut Down Major Roads This Civic Holiday Weekend

Ottawa will host its first-ever Ironman triathlon this Sunday, August 4, and while the event will bring in over 2,500 athletes from across the globe, it will also come with significant road and bridge closures throughout the capital region.

What Is Ironman Canada–Ottawa?

The event is part of the VinFast Ironman North America Series and includes a 226-kilometre course:

• 3.8 km swim at Britannia Beach
• 180 km bike ride across Ottawa and Gatineau
• 42.2 km run ending near the National Gallery of Canada

This prestigious race offers qualifying spots for the 2026 Ironman World Championship.

When and Where Will the Race Happen?

The competition kicks off Sunday at 6 a.m. at Britannia Beach. The swim is followed by a multi-loop bike course through scenic parkways and a marathon that ends on Murray Street, downtown Ottawa. Athletes have until midnight to complete the race.

Transition zones are located at Britannia Park and Major’s Hill Park, while Confederation Park will host the Ironman Village, athlete check-ins, briefings, and post-race celebrations through Monday.

Expect Major Road Closures Across the City

Many closures begin as early as Friday, with others lasting until Monday evening. If you’re driving or commuting this weekend, expect significant disruptions.

Key Closure Times and Locations:

Friday, August 2:

• Alexandra Bridge closes at 9:30 a.m., reopens Monday at noon

Saturday, August 3:

• Sussex Drive (Murray to St. Patrick) closes at 5 a.m., reopens Monday at 6 p.m.

Sunday, August 4:

• 3 a.m. onward: Rolling road and bridge closures begin
• Kichi Zībī Mīkan (Carling to Island Park): 6 a.m. to 10 a.m.
• Colonel By Drive & Island Park Drive: Until 4–4:30 p.m.
• Queen Elizabeth Driveway & NCC Scenic Driveway: Until midnight
• Chaudière, Champlain, Portage, and Pretoria Bridges: Closed for most or all of Sunday
• Mackenzie Avenue: 6 a.m. Sunday to 7 a.m. Monday

The Macdonald-Cartier Bridge will be the only interprovincial bridge open to vehicle traffic during the race.

Full List of Major Roads Affected

• Kichi Zībī Mīkan
• Colonel By Drive
• Queen Elizabeth Driveway
• Island Park Drive
• Rockcliffe Driveway
• Sir George-Étienne Cartier Parkway
• Prince of Wales Drive
• Sussex Drive
• Wellington Street
• Mackenzie Avenue
• Arboretum Roadway
• NCC Scenic Driveway

What About Transit?

OC Transpo routes affected by the closures will be detoured, and the city recommends using public transit or the O-Train to get around.

Michelle McElligott, City of Ottawa’s Traffic Management Specialist, advises:

“We really do encourage the use of public transit. Many of the spectator areas are easily accessible by the light rail.”

For real-time updates, the City recommends using Ottawa’s interactive traffic map on its official website.

Event Schedule Highlights

• 3:30–5:30 a.m.: Athlete shuttle to swim start
• 6:00 a.m.: Ironman race begins
• 6:00 p.m.: Bike and gear check-out closes
• 10:00 p.m.–12:00 a.m.: Finish Line Celebration (“Magic Hour”)
• Monday 8:30–11:00 a.m.: Awards Ceremony and Celebration Breakfast at Confederation Park

Will you be attending or avoiding the Ironman Ottawa route this weekend? Share your plans or tips for navigating the city in the comments.

More…

• https://www.ctvnews.ca/ottawa/article/heres-what-you-need-to-know-about-the-ironman-canada-ottawa-event-on-sunday
• https://ncc-ccn.gc.ca/closures/closures-on-ncc-parkways-driveways-and-bridges-on-august-1-and-3-for-the-2025-ironman-canada-ottawa
• https://www.cbc.ca/news/canada/ottawa/first-ironman-competition-will-close-major-roads-this-weekend-1.7597574