Snapshot

What to know before you shortlist this race

The fastest way to evaluate a marathon is to line up the date, course profile, crowd size, and registration pressure in one place.

May 24, 2026

Race day

Full Marathon, Half Marathon, 10K, 5K, Kids' Run

Distance

Road

Terrain

24,000

Participants

Race brief

This race takes place in Ottawa, Ontario, Canada on May 24, 2026. Use the details below to decide whether the course, logistics, and registration timeline match the type of season you are building.

Decision signals

Loop with road terrain.
Boston Qualifier status is listed for runners chasing a standards-friendly course.
Athletics Canada adds extra trust to the route data.
Published entry fee: CAD 130.00 - CAD 175.00.

Why This Race

The organizer pitch, translated for runners

The Tamarack Ottawa Race Weekend is one of Canada's most prestigious running events, bringing the nation's capital to life over a weekend of racing. The marathon course is flat and fast, running along the scenic Rideau Canal, past Parliament Hill, through leafy neighborhoods, and across the Ottawa River into Gatineau, Quebec - making it a unique two-province race. The event is a Boston qualifier and regularly sells out. The weekend features a marathon, half marathon, 10K, 5K, and kids marathon.

Course Fit

Course shape, standards, and race history

This is the section to compare terrain, elevation, certification, and field context before you decide whether the race belongs on your calendar.

Elevation profile

Illustrative profile based on available elevation data. Use it as a directional planning signal, not a final course guarantee.

Actual course elevation and routing may vary from the visual estimate.

Course highlights

🛣
Loop course
Layout style reported for this race.

🏔
Road terrain
Primary running surface.

🏆
BQ course
Boston Qualifier eligible.

✅
Certified
Athletics Canada

⛰
45m gain
Estimated total elevation gain.

History and records

First edition 1975

Avg. participants 24,000

Planning

Travel and race-weekend logistics

Once a race makes your shortlist, travel confidence matters almost as much as the course itself. Keep the practical notes in one place.

Race day weather

Late May in Ottawa is spring with temperatures of 10-22C (50-72F). Occasional rain possible. Pleasant running conditions.

Organizer

Run Ottawa Official website

Community Layer

Keep the race room close to the decision

The point of the room is not generic chatter. It is to keep stay questions, pacing nerves, meetup plans, and last-mile logistics attached to the same race page you are already using.

52 threads 153 followers 2 huddles

Tamarack Ottawa Marathon Room

Threads, logistics, reviews, Q&A, and live huddles for Tamarack Ottawa Marathon.

These opening threads are seeded to show the shape of the room before organic posts take over.

Open race room Canada Club

Lead thread

Where are people staying for Tamarack Ottawa Marathon?

Trying to keep the start line, expo, and easy food options all within a sane radius. If you have a hotel block, neighborhood, or train strategy that worked, drop it here.

Open thread

Next huddle

Tamarack Ottawa Marathon logistics huddle

Fifteen minutes on travel timing, where the expo bottlenecks are, and what people wish they knew earlier.

View huddle

Runner Signal

Runner reviews

First-person reviews help separate a photogenic listing from a race that actually delivers on race day.

📝

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Practical Questions

Questions and answers

Use the Q&A stream for the details that usually get buried in race-weekend forums.

💬

No questions yet. If something would block your decision, ask it here.

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