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Events
CANRunningRoad10K · 10 km / 6.2 mi5K · 5 km / 3.1 miHalf · 21.1 km / 13.1 miMarathon · 42.2 km / 26.2 mi

Tamarack Homes Ottawa International Marathon

Ottawa, Ontario, Ottawa City Hall · CAN

Next race day

Sun, 30 May 2027

Time TBC · EDT

Race websiteOfficial entryCalendar

About Tamarack Homes Ottawa International Marathon

Tamarack Homes Ottawa International Marathon is a running event in Ottawa, Ontario, Ottawa City Hall, Canada. Recorded disciplines include 10K, 5K, half marathon, Marathon. The listed surface is road. The listed organiser is Run Ottawa. The next listed date is 30 May 2027. Check the organiser's information for entry and race-day arrangements.

Dates, starts & entry

Times are local to the race. Select the entry route for your distance.

  • Marathon · 42.2 km / 26.2 mi

    Sun, 30 May 2027

    Start time not yet confirmed

    Entries open

    Official entry

    Tamarack Ottawa Race Weekend 29–30 May 2027.

    Edition source

Location & race day

Listed venue / area

Ottawa City Hall, Ottawa, OntarioCAN

Find this location on a map

Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.

About the race

The 2027 Ottawa International Marathon is Sunday 30 May 2027, 07:00.

Surface:
Road
Organiser:
Run Ottawa
Race website

Ways to enter

Compare the listed booking routes. Verified links show when they were checked.

Sun, 30 May 2027

Tamarack Homes Ottawa International Marathon

Official entry

Entries openVerified
Verified Thu, 3 Sept 2026

Official FAQ: Sunday 30 May 2027, 07:00.

Enter officially

Third-party prices, booking fees, allocations and refund terms can differ. Confirm the final details with the provider before paying.

Results

Public-figure or athlete-approved ATHRECS results, plus verified organiser links.

No verified results links have been added yet.

Past races

None listed yet.

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