Ottawa Triathlon 70.3
Half Ironman / 70.3 Independent

Ottawa Triathlon 70.3

Ottawa, Canada · MAY

🏊 1900m
🚴 90km
🏃 21.1km
43

Triathlon Index Score

Challenging

Average Finish Time 05:30:00
Total Finishers 2 208
Temperature 15°C
Water Temperature 13°C
Bike Elevation ↑821m
Established 2008

"Cold-water ocean swim and hilly bike course in the rugged beauty of Ottawa."

🏊 Swim

Distance 1900m
Water ocean (open-water)
Water Temp 13°C
Wetsuit conditional

Ocean swim in Ottawa

🚴 Bike

Distance 90km
Elevation ↑821m
Profile hilly
Drafting Non-drafting

Hilly bike course around Ottawa

🏃 Run

Distance 21.1km
Elevation ↑123m
Surface road
Topology out-and-back

Run through Ottawa

Transition Details

T1 — Swim → Bike
T2 — Bike → Run

T1/T2 are in the same location · Surface: pavement

Weather

Air Temp 15°C
Humidity 70%
Rain Chance 34%
Wind 14 km/h

Typical conditions in Ottawa

Registration

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Entry Cost €357
Time Limit 8.5h
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The Story

There's a reason 70.3 is the fastest-growing distance in triathlon, and races like Ottawa's are the proof. This isn't a scaled-down Ironman. It's a purpose-built race. The 1.9km swim sends you into cold open ocean at 13°C — bracing — the kind of cold that sharpens focus. It's long enough that a poor start costs real time, short enough that strong swimmers can build a genuine lead. The 90km bike is the defining leg: 821m of elevation gain across a mountainous course that separates those who trained for this specific distance from those who just showed up fit. Ninety kilometres of climbing changes the race equation entirely. The 21.1km run rolls through Ottawa, adding 123m of climbing to legs already tested by the bike. The undulations are psychological as much as physical — each rise feels larger than it is when you've been racing for four hours. This is 70.3 in Ottawa: Rideau Canal proximity, Parliament Hill as a landmark, bilingual Canada Day energy. 70.3 miles of honest racing. No shortcuts, no easy legs, no forgiveness for a bad plan.

"I trained for six months specifically for this 70.3. Standing at the finish line in Ottawa, every session was worth it."

First-time 70.3 finisher — Post-race, Ottawa Triathlon 70.3

What It Feels Like

70.3 triathlon with Ottawa character. This course suits experienced 70.3 athletes who want a course that fights back. This isn't a PB course — it's a character-building one. Five-plus hours of racing through a city this distinctive — the setting adds a dimension no training plan can replicate.

🏊 The Swim

A 1.9km ocean swim in cold saltwater at 13°C — long enough that sighting discipline and stroke efficiency matter more than raw speed. Ocean swell can push you off-line; sight every 8-10 strokes. The salt buoyancy helps body position but stings the eyes. Exit through the surf and run to T1.

🚴 The Bike

90km with 821m of climbing — a mountainous bike course that makes the 90km the race's decisive leg. Power-to-weight matters more than pure wattage. The climbs test your legs; the descents test your nerve. Come with a compact crankset, climbing legs, and the discipline to save something for 21.1km of running.

🏃 The Run

A 21.1km rolling run through Ottawa with 123m of gain. The undulations feel disproportionate on legs that have just covered 90km of bike. Keep cadence quick on the ups, use the downs to stretch your stride, and run the tangents. In mild 15°C conditions, each hill amplifies the heat cost. Walk an aid station if you need to — it costs 15 seconds and gains you proper hydration.

💡 Insider Tips

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FAQ

What distance is the Ottawa Triathlon 70.3? +

The Ottawa Triathlon 70.3 is a Half Ironman / 70.3 distance triathlon: 1900m swim, 90km bike, and 21.1km run (113km total) in Ottawa, Canada.

When is the Ottawa Triathlon 70.3? +

Typically held in May on a Sunday.

Water temperature and wetsuit rules? +

Ocean water at 13°C average. Wetsuit rules are conditional.

How hilly is the bike course? +

821m of climbing over 90km. Profile: hilly. Drafting not allowed.

What's the weather like on race day? +

undefined–undefined°C, 70% humidity, 34% rain chance, 14 km/h winds.

Average finish time? +

Approximately 5h 30m. Varies with conditions and athlete experience.

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