Tartan Ottawa International Marathon


The Tartan Ottawa International Marathon is Canada’s largest and fastest marathon. One of two World Athletics Gold Label marathon events in Canada, the race attracts thousands of participants, including a world-class contingent of pro-athletes every year. The Tartan Ottawa International Marathon is one of Canada’s largest Boston Qualifiers.


Date: Sunday, May 28, 2023
Time: 7:00 am ET
Location: Ottawa City Hall
110 Laurier Ave W, Ottawa, Ontario

Included with your registration:

    • A commemorative 2023 Finisher medal 
    • A personalized race bib (register before May 1, 2023)
    • Free premium upgrade of Runkeeper to Runkeeper GO, which includes access to customizable training plans.
    • Nuun and Xact Nutrition on course
    • Timing by Sportstats
    • A post-race beer from Kichesippi Beer co.
    • Post-race refreshments
    • Virtual option available

Additional features:

  • Commemorative t-shirts by Surge Activewear are available for purchase during registration.
  • Photography and videography available for purchase.

Green Bib:

Run Ottawa is offering a Green Bib option at registration for those wishing to reduce their environmental footprint. In lieu of a medal or any mailed amenities, you can choose to divert part of your registration fee to the Green Bib fund which supports the Desjardins Charity Challenge.

Elite registration:

Please see athletic standards and 2023 prize purse prior to applying. Applications will open in 2023.

Course Features

  • Kilometre markers along the entire route.
  • Water/Nuun stations are set up approximately every 3K. Nuun is served at the first tables of each station, and water at the following tables.
  • Xact Nutrition stations located at 11.5K, 27K and 38K in a mix of strawberry, apricot and orange flavours.
  • Cooling and misting stations available on-course.
  • Portable toilets at every water station.
  • Cheering and entertainment stations.
  • Full medical services on the route and at the finish line.

Hotel Information & Reservations

Tamarack Ottawa Race Weekend has partnered with several hotels to secure the best pricing for your stay in Ottawa. You can book now or through the confirmation page after your race registration has been completed. Details, including cancellation policies, are available with each hotel listing.

For answers to your Frequently Asked Questions (FAQ) please visit the Registration Information page.