Toronto Triathlon Festival (Supertri Toronto)
Toronto, Canada · July · Super League (Supertri)
Why people love it
- Bike on fully closed Gardiner Expressway and Don Valley Parkway, 2 a.m. to noon.
- Sprint swim is 750 m (0.47 mi) in a harbour protected by a breakwater.
- Venue is 3 km (1.9 mi) from Billy Bishop airport and close to downtown restaurants.
- Lake Shore run is flat, and shorter loops keep spectators close.
- Wetsuits are legal at 24.6 °C (76.3 °F) or below, usual for the harbour in July.
Watch out for
- Lake Ontario was about 16 °C (61 °F) in 2015 and felt cold to 2018 and 2019 racers.
- The swim exit is a walk of about 250 m (820 ft) to transition.
- The run is exposed and humid in hot years, with little shade.
- Wind and rain hit the 2018 race; storms hit the 2016 weekend.
- Downtown hotels are pricey in July, and highway closures start at 2 a.m.
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 30% of the overall score.
Toughness: Moderate
- Racer satisfactionLoved4.0
Six first-hand and press reports 2015 to 2025 are warm about the downtown setting and organisation; weather in 2018 hurt the experience. · Medium confidence
- OrganizationWell run4.1
Safe, smooth running of a complex city venue praised in 2016, and fully closed highways in 2026; no course errors found, little recent athlete feedback. · Medium confidence
- First timer friendlyFriendly3.8
A 750 m (0.47 mi) protected swim and closed-road bike suit first-timers, though one found the cold swim hard. · Medium confidence
Course traits, not part of the score
- PR potentialFast3.5
Closed flat bike and short run; average-to-fast. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 16% of the overall score.
- Wetsuit legalUsually4.2
Triathlon Ontario allows wetsuits at or below 24.6 °C (76.3 °F); July harbour water is about 16 to 22 °C (61 to 72 °F). · Medium confidence
- Water temperatureAcceptable3.4
About 16 °C (61 °F) in 2015 and cold in 2019; comfortable water needs a warm summer. · Medium confidence
- Calm waterMostly calm4.2
Breakwater-protected harbour; 2015 and 2016 recaps describe calm water, though a storm weekend in 2018 was cold and windy. · Medium confidence
- Swim easeEasy3.8
750 m (0.47 mi) in sheltered water. · Medium confidence
- Swim experienceGreat3.6
Skyline harbour setting and feet-first dock entry, but cold water and a ramp exit then 250 m (820 ft) walk. · Low confidence
- Swim supportGood3.8
Protected harbour with wave starts and dock entry; no detail published on kayak or lifeguard numbers. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 18% of the overall score.
- Road surfaceMixed3.3
Expressway asphalt with joints; no reports of damage but no praise either. · Low confidence
- Road closuresFully closed4.8
Gardiner and Don Valley Parkway fully closed from 2 a.m. to noon per police; riders report no traffic. · High confidence
- Bike sceneryBeautiful4.1
Riding the Gardiner past the Toronto skyline is called special by two bloggers. · Medium confidence
- WindSome wind3.1
Open expressway near the lake; high wind and rain in 2018, hot and still in 2016. · Low confidence
Course traits, not part of the score
- Bike speedFast3.7
Closed highway. · Medium confidence
- Bike flatnessMostly flat4.0
20 km (12.4 mi) described as relatively flat; no published gain, likely under 100 m (330 ft). · Low confidence
- Bike simplicityMostly simple3.9
Straight divided highway with a turnaround; few technical sections. · Medium confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong3.5
Lakefront downtown run with shorter loops; no athlete has described the crowds. · Low confidence
- Aid stationsStandard3.4
Two aid stations on the 5 km (3.1 mi) sprint run (Supertri); no athlete reports. · Low confidence
- Run sceneryBeautiful3.8
Lakefront and downtown skyline, though mostly urban road. · Low confidence
- Run conditionsEasy3.6
5 km (3.1 mi) is short enough to handle exposure. · Low confidence
Course traits, not part of the score
- Run flatnessMostly flat4.3
Flat lakefront. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 13% of the overall score.
- Air temperaturePleasant3.6
Late July highs about 25 to 28 °C (77 to 82 °F) with humidity; 2018 was cold and wet instead. · Medium confidence
- Weather reliabilityVariable3.1
Thunderstorms in 2016 weekend, cold wind and rain in 2018, clear and hot other years. · Medium confidence
- Venue beautyLovely4.0
Ontario Place waterfront with the Toronto skyline behind. · Medium confidence
- Spectator friendlyEasy4.4
Central downtown venue and shorter loops designed so spectators see athletes often. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level5.0
76 m (250 ft) above sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 10% of the overall score.
- Hotel availabilityBook early3.3
Big city but July is peak season and race weekend adds demand. · Low confidence
- Hotel valueNormal2.7
Downtown Toronto summer rates are high, no race-specific pricing evidence. · Low confidence
- WalkabilitySome driving3.4
Swim, transition and finish are all at Ontario Place, but the swim exit is 250 m (820 ft) from transition and roads close early. · Low confidence
- Travel easeVery easy4.7
Billy Bishop airport 3 km (1.9 mi); Pearson 25 km (15.5 mi); rail and transit. · High confidence
- LogisticsSimple3.5
Single venue and wave starts, but 2 a.m. highway closures and a 250 m (820 ft) swim-to-transition walk complicate race morning; packet details not published. · Low confidence
- Town and foodGreat4.6
Major city with restaurants of every kind. · High confidence
Key facts
- Location
- Toronto, Ontario, Canada
- Typical month
- July
- Latest or next date
- 25 July 2027
- Organiser
- Super League (Supertri)
- Field size
- About 1,750 athletes
- First held
- 2012
- Distances
- 0.8 km (0.5 mi) swim, 20 km (12.4 mi) bike, 5 km (3.1 mi) run
- Swim venue
- Ontario Place West Channel and Inner Harbour, Lake Ontario (harbour)
- Water temperature
- 16–22 °C (61–72 °F)
- Wetsuit
- Legal (rule: Triathlon Ontario, wetsuit allowed at 24.6 °C / 76.3 °F or below, measured 1 hour before the start)
- Swim start
- wave (feet-first entry from a floating dock, no diving)
- Key climbs
- Don Valley Parkway ramps
- Run shade
- little shade, exposed in 2019
- Air temperature
- 18–28 °C (64–82 °F)
- Humidity
- humid
- Altitude
- 76 m (250 ft)
- Nearest airport
- Billy Bishop (YTZ), 3 km (1.9 mi); Pearson (YYZ), 25 km (15.5 mi), 3 km (2 mi) away
- Where to stay
- Liberty Village, Waterfront, King West
- Booking
- Downtown Toronto, big hotel supply but July prices are high.
What racers and reviewers say
- Sean Chin blogRaced 2018 · blog · Positive
First-ever triathlon, a sprint in cloudy, drizzly weather with about 1,500 athletes. The open-water swim was far colder and harder than pool training, with contact and off-course moments, and he switched to backstroke at times. The Gardiner bike in wind and rain felt special, and he passed people on the run. Thanked volunteers and organisers.
“a truly special day”
- Triathlon Magazine CanadaRaced 2015 · article · Positive
Race recap of the 2015 edition. Lake Ontario at about 16 °C (61 °F) made the harbour swim wetsuit legal, on an out-and-back route inside the breakwater. A draft-legal junior and under-23 race was added that year. Olympic winners were Andrew Bolton (1:54:30) and Kirstie Kniaziew (2:07:23).
- Triathlon Magazine CanadaRaced 2016 · article · Positive
Fifth-anniversary recap. Race day was hot and still after weekend thunderstorms, with calm, cold water for the Olympic swim. The bike used closed Gardiner, Don Valley Parkway and Lakeshore Boulevard and the run was flat along the lakefront. The writer praised safe, organised running of a complex urban venue, a family-friendly feel and supportive motorists honking from outside the closures.
- Triathlon Magazine CanadaRaced 2018 · article · Mixed
Seventh-edition recap. Saturday was sunny, then Sunday brought overnight high winds, heavy rain and chilly temperatures that made a gloomy start. The festival still ran Olympic and sprint races, the Ontario Cup and draft-legal sprints. Simon Whitfield returned to race a sprint.
“high winds, lots of rain and some chilly temperatures”
- UBC Recreation (TSC Triathlon)Raced 2023 · article · Positive
Student team recap of the festival's first university provincial championship. The UBC team won the overall title and described the weekend as friendly and team-focused. Gives distances only (1.5 km (0.9 mi) / 0.93 mi and 750 m (2,460 ft) / 0.47 mi swims) and no course complaints.
“felt like a true team sport”
Show 2 more
- CP24 (CTV)Raced 2025 · article · Positive
Preview of the 2025 Supertri weekend. Pros spoke about shorter loops that keep athletes in sight of spectators, with the sheltered Ontario Place swim, closed-road bike and Lake Shore Boulevard and Gardiner run. Athletes said short-course racing is more fun to watch and could grow the sport in Canada.
“Everything happens in transition.”
- CTV News / Toronto Police closure noticeRaced 2026 · article · Positive
Local news on the July 26, 2026 closures. The Gardiner is closed eastbound from the Humber River to the Don Valley Parkway and the DVP northbound from the Gardiner to Eglinton, from 2 a.m. to noon, for the 13th edition. Confirms a fully closed, traffic-free bike course.
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Sources
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