Best 70.3 races in Canada

8 rated races, ranked by an overall score built from racer reviews and race reports. How we rate

70.3

8 races

1. Barrelman Niagara Falls Half
Welland / Niagara Falls, Canada
Last race 20 Sep 2026
Overall score 4.4
Very good
#9 of 221
Moderate evidence · 7 sources
Water 20–23 °C (68–73 °F)
1. Barrelman Niagara Falls Half
Overall score 4.4Very goodModerate evidence · 7 sourcesTop 5%#9 of 221 overall
Welland / Niagara Falls, Canada · Last race 20 Sep 2026
Racers loveGlassy 2 km (1.2 mi) swim in the Welland rowing basin
Watch outSplit transitions about 25 km (16 mi) apart, with bus transfers
“The race swim was easy, because the lake is super smooth.” Michael Hatch, Slowtwitch forum: Barrelman Niagara Falls…
Water
20–23 °C (68–73 °F)
Field
about 1,000
Best
Race 4.6
Weakest
Stay and travel 3.3
2. SAIL Challenge Quebec
Quebec City, Canada
Next race 25 Jul 2027
Overall score 4.3
Very good
#12 of 221
Moderate evidence · 7 sources
Water 22–24 °C (72–75 °F)
2. SAIL Challenge Quebec
Overall score 4.3Very goodModerate evidence · 7 sourcesTop 6%#12 of 221 overall
Quebec City, Canada · Challenge Family · Next race 25 Jul 2027
Racers loveCalm swim in Bassin Louise beside Old Quebec
Watch outFour-lap highway bike can feel monotonous
“a better experience than any Ironman event” Alexvanneste, Slowtwitch forum comment
Water
22–24 °C (72–75 °F)
Air
18–27 °C (64–81 °F)
Bike climb
126 m (415 ft)
Field
about 2,000
Best
Stay and travel 4.7
Weakest
Race 4.1
3. IRONMAN 70.3 Mont-Tremblant
Mont-Tremblant, Canada
Next race 20 Jun 2027
Overall score 4.1
Very good
#17 of 221
Thin evidence · 4 sources
Water 17–22 °C (63–72 °F)
3. IRONMAN 70.3 Mont-Tremblant
Overall score 4.1Very goodThin evidence · 4 sources#17 of 221 overall
Mont-Tremblant, Canada · IRONMAN · Next race 20 Jun 2027
Racers loveClear, calm Lac Tremblant swim with a rolling start
Watch outHilly bike with grades up to 8 percent and descents near 60 km (37.3 mi)/h (37 mph)
Water
17–22 °C (63–72 °F)
Air
12–23 °C (54–73 °F)
Best
Bike 4.7
Weakest
Stay and travel 3.4
4. SAIL Challenge Esprit Montreal
Montreal (Parc Jean-Drapeau, Ile Notre-Dame), Canada
Next race 12 Sep 2027
Overall score 4.1
Very good
#21 of 221
Thin evidence · 4 sources
Water 18 °C (64 °F)
4. SAIL Challenge Esprit Montreal
Overall score 4.1Very goodThin evidence · 4 sources#21 of 221 overall
Montreal (Parc Jean-Drapeau, Ile Notre-Dame), Canada · Challenge Family · Next race 12 Sep 2027
Racers loveCompact venue: swim in the Olympic basin, bike on an F1 circuit, run beside the basin
Watch outAbout 21 bike laps: crowding, lap counting and banked turns
“The run is dead flat and smooth around the basin.” RaceCheck (Murilo C.)
Water
18 °C (64 °F)
Bike climb
108 m (355 ft)
Field
about 3,800
Best
Bike 4.8
Weakest
Conditions 3.8
5. IRONMAN 70.3 Muskoka
Huntsville, Canada
Next race 18 Jul 2027
Overall score 3.5
Very good
#91 of 221
Moderate evidence · 6 sources
Water 19–22 °C (66–72 °F)
5. IRONMAN 70.3 Muskoka
Overall score 3.5Very goodModerate evidence · 6 sourcesTop 41%#91 of 221 overall
Huntsville, Canada · IRONMAN · Next race 18 Jul 2027
Racers loveLake of Bays bike views through Muskoka cottage country
Watch outBike has over 1,100 m (3,600 ft) of climbing, with 29 short climbs up to 19.6%
“The Beast” Sean Chin race report
Water
19–22 °C (66–72 °F)
Air
7–26 °C (45–79 °F)
Bike climb
1,100 m (3,610 ft)
Field
about 1,000
Best
Swim 4.3
Weakest
Run 2.4
Not a standard 70.3
6. Oliver Half Iron (Oliver Triathlon Weekend)
Oliver, Canada
Next race 6 Jun 2027
Overall score 3.3
Good
#119 of 221
Moderate evidence · 5 sources
6. Oliver Half Iron (Oliver Triathlon Weekend)
Overall score 3.3GoodModerate evidence · 5 sourcesBottom 47%#119 of 221 overall
Oliver, Canada · Next race 6 Jun 2027
Not a standard 70.3 · 2 / 89 / 21 km
Racers loveSpring-fed Tucelnuit Lake swim in calm, clean water
Watch outHeat on the run in early June is a recurring theme
Field
about 190
Best
Swim 3.9
Weakest
Run 3.2
7. IRONMAN 70.3 Victoria
Victoria (Saanich), Canada
Next race 30 May 2027
Overall score 3.1
Good
#162 of 221
Strong evidence · 10 sources
Water 14–21 °C (57–70 °F)
7. IRONMAN 70.3 Victoria
Overall score 3.1GoodStrong evidence · 10 sourcesBottom 28%#162 of 221 overall
Victoria (Saanich), Canada · IRONMAN · Next race 30 May 2027
Racers loveScenic bike loop past Butchart Gardens, Brentwood Bay and Haro Strait
Watch outRoads are not fully closed; about 20 sharp 90-degree corners and several reported crashes
“the run was the highlight” Rappstar (Jordan Rapp)
Water
14–21 °C (57–70 °F)
Air
12–23 °C (54–73 °F)
Field
about 2,000
Best
Conditions 3.7
Weakest
Bike 2.5
8. IRONMAN 70.3 Calgary
Cochrane (Calgary area), Canada
Last race 26 Jul 2026
Overall score 2.6
Good
#206 of 221
Moderate evidence · 8 sources
Water 18–22 °C (64–72 °F)
8. IRONMAN 70.3 Calgary
Overall score 2.6GoodModerate evidence · 8 sourcesBottom 7%#206 of 221 overall
Cochrane (Calgary area), Canada · IRONMAN · Last race 26 Jul 2026
Racers loveFoothills swim in Ghost Lake with a Rockies backdrop
Watch outAltitude about 1,200 m (3,900 ft)
“A local race with an IM price tag.” Slowtwitch forum: Tell me about 70.3 Calgary
Water
18–22 °C (64–72 °F)
Air
10–27 °C (50–81 °F)
Field
about 1,100
Best
Swim 3.7
Weakest
Race 2.3

About these ratings

Races are ranked by an overall score out of 5, built from racer reviews and race reports, on the race itself, swim, bike, run, conditions and travel. 5 is always the better end. How we rate

70.3 course: 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run.

Reports on 70.3 races are scarcer, so 2 of 8 scores are thin evidence: fewer than 5 sources each (dashed score, marked provisional). Show only races with 5+ sources. 1 races run a non-standard course and are flagged.

51 racer reviews and race reports.

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