Tartan Ottawa International Marathon

The Tartan Ottawa International Marathon and the Ottawa Half Marathon presented by Desjardins are now SOLD OUT! Thank you to everyone who has already registered, we can’t wait to see you this May!

Online registration is now closed, you can register onsite at the Running and Fitness Expo located at the Carleton University Fieldhouse on a first come, first served basis.

Expo hours of operation:

  • Thursday, May 22 – 4:00pm – 9:00pm
  • Friday, May 23 – 9:00am – 9:00pm
  • Saturday, May 24 – 8:00am – 6:00pm

Onsite registration prices:

  • 2K 42.00 + fees + HST
  • 5K 60.00 + fees + HST
  • 10K 120.00 + fees + HST

Get ready to experience the thrill of the Tartan Ottawa International Marathon, one of Canada’s most celebrated marathons for over 50 years! With breathtaking scenic routes that weave through the nation’s capital, this race offers an unforgettable backdrop for runners of all levels. The atmosphere is electric, buzzing with the energy of thousands of passionate participants and elite athletes from around the globe. As a prestigious World Athletics Label Race, the Tartan Ottawa International Marathon promises not just a race, but a celebration of endurance, community, and the joy of running. Join us and be part of the excitement!

Find a list of this year’s course highlights here.

The Tartan International Ottawa Marathon is a certified course, and is a Boston Marathon qualifying event.

Included with your registration:

  • A one-of-a-kind marathon finisher medal that spins!
  • A personalized race bib (first name)
  • Xact Nutrition and Hydration on course
  • Professional race timing
  • Recovery food
  • Two weeks FREE access to #1 rated personalized running coaching app, Runna!
  • An unparalleled marathon experience!

 

Optional add-ons:

  • Souvenir Tartan Ottawa International Marathon race shirt 
  • iTab Commemorative Ribbon Hanger
  • Photography and videography packages from Marathon Photos Live
  • Subscription to iRun Digital Magazine
  • An opportunity to give back to your community by fundraising for a charity!

EVENT DETAILS:

Date: Sunday, May 25, 2025
Start Time: 7:00 am ET
Location: Ottawa City Hall
110 Laurier Ave W, Ottawa, Ontario

 

Marathon participants are expected to reach the 27km marker (Pretoria Bridge area) by 11:30 a.m. If they have not, they may be redirected to the finish line. Marathon participants are expected to complete the race within 7 hours.

 

Find an interactive map of Sunday’s course here.

Total event capacity: 4.000

Current pricing:

$228.96 CAD (includes applicable fees) + hst (payable in equal instalments at check out)
In-person, virtual and Green Bib options available.

  • For ages 18+
  • The Green Bib option is now available on the General registration form.
  • PLEASE NOTE: Virtual registration is now closed.

Tartan Ottawa International Marathon Bus Tour

Sign-up now –  spaces are limited!

Join us for a relaxed and informative bus tour of the brand-new Tartan Ottawa International Marathon course—free for all marathon registrants! This exclusive preview offers the perfect chance to familiarize yourself with the route while enjoying insights into Ottawa’s iconic landmarks and rich history.

WHEN: Saturday May 24, 2025
  • 9:30 am
  • 11:30 am

WHERE: Leaves from the Running and Fitness Expo at Carleton University Fieldhouse. Please visit the info booth outside the Fieldhouse for directions.

GET YOUR TICKET

SAVE 10% WITH A RUN OTTAWA MEMBERSHIP!

You can now buy an RO membership seamlessly in-registration when signing up for a Run Ottawa event! As a member, you’ll enjoy exclusive benefits like 10% off the Tartan Ottawa International Marathon and all other Run Ottawa events! Individual, dual, youth and family options now available! Find out more!

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.

COURSE FEATURES:

  • Kilometre markers along the entire route.
  • Water/Xact stations are set up approximately every 3K. Lemon flavoured Xact is served at the first tables of each station, and water at the following tables.
  • Xact Nutrition stations located at 8.5K, 22K and 32.5K 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.
  • Strollers are not permitted on course.

ELITE ATHLETE REGISTRATION:

Please see athletic standards and 2025 prize purse prior to applying. 

ADAPTIVE ATHLETE INFORMATION:

Adaptive Athletes can opt to have up to three guides on their race course. Promo codes or direct registration links for guide/support runners will be emailed to Adaptive Athletes bi-weekly on Fridays. These emails, titled “Guide/Support Runner Information” will be sent from the Let’s Do This platform. Adaptive Athletes can share the provided promo code or direct link with their guide runner(s) to ensure complimentary and timed entry into Tamarack Ottawa Race Weekend.

Full information on the Adaptive Athlete program can be found by following this link. 

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