Triathlon 5150 Mont-Tremblant (Olympic)
Mont-Tremblant, Canada · June · IRONMAN (5150 series)
Why people love it
- Wetsuit-legal lake swim at about 17 to 18 °C (63 to 64 °F) in race week.
- Pedestrian village puts transition, the IRONMAN village and the finish close together.
- Laurentian bike roads; the double climb of Duplessis earns the views.
- Same weekend as the 70.3, so the village is full of fans.
- Chip timing and live tracking on the IRONMAN app.
Watch out for
- Bike climbs Duplessis twice, about 600 m (1,970 ft) in total by one forum estimate.
- Highway 117 has logging trucks and crumbling shoulders; take care on the bike.
- Lake chop and wind: the 2025 Friday swim was very choppy.
- No sprint on Saturday, only the Olympic. Few athletes have written about this race.
- Rooms are tight with about 5,000 triathletes in town; book early.
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: Very tough
- Racer satisfactionLoved3.6
Only informal 2025 accounts, a forum thread and a first-timer profile, plus organiser copy. Nothing hostile, but nothing independent either. · Low confidence
- OrganizationWell run3.7
IRONMAN-run weekend with over 800 volunteers, live tracking and chip timing. No racer complaints found. · Low confidence
- First timer friendlyDoable3.0
Cold, windy lake, two climbs of Duplessis and a busy highway, with no sprint option on Saturday. · Low confidence
Course traits, not part of the score
- PR potentialAverage2.6
About 600 m (1,970 ft) of climbing over 40 km (25 mi), by one forum estimate, makes it slower than flat Olympics. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 16% of the overall score.
- Wetsuit legalAlmost always4.7
June water of about 17 to 18 °C (63 to 64 °F) is far below the 24.6 °C (76.3 °F) ban. · Medium confidence
- Water temperatureAcceptable3.0
Mid-60s °F (about 17 to 18 °C (64 °F)) in race week: cool, but fine in a wetsuit. · Medium confidence
- Calm waterSome chop2.9
Wind-driven chop. The 2025 Friday swim was very choppy, and northwest winds bring whitecaps. · Medium confidence
- Swim easeEasy3.5
Single loop in waves by class, but wind chop can make sighting hard. · Low confidence
- Swim experienceGreat3.8
Mountain-lake swim with spectators at the start in the village. · Low confidence
- Swim supportStandard3.4
Standard IRONMAN safety and wave starts; no kayak or lifeguard detail found. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 18% of the overall score.
- Road surfaceMixed2.8
Crumbling shoulders and logging trucks on Highway 117, per a 2025 forum thread. · Low confidence
- Road closuresPartly closed3.4
The resort lists closures, but trucks use Highway 117 in training week; race-day extent is unclear. · Low confidence
- Bike sceneryBeautiful4.0
Laurentian lakes and forest; no racer comments on the scenery. · Low confidence
- WindMostly calm3.5
No bike wind reports; lake wind affects the swim. · Low confidence
Course traits, not part of the score
- Bike speedAverage2.6
About 600 m (1,970 ft) of climbing and a busy highway section. · Low confidence
- Bike flatnessRolling2.8
About 600 m (1,970 ft) over 40 km (25 mi), per a forum estimate. Not officially published. · Low confidence
- Bike simplicitySome technical parts3.2
Climbs and descents, with no technical complaints found. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong3.5
Finish in the pedestrian village; fewer fans than at the Sunday 70.3. · Low confidence
- Aid stationsGood3.6
IRONMAN-standard aid; no race-specific comments. · Low confidence
- Run sceneryBeautiful3.8
Lakes and resort village; no run-specific review. · Low confidence
- Run conditionsEasy3.5
Fully paved now, though June heat up to 27 °C (81 °F) is possible. · Low confidence
Course traits, not part of the score
- Run flatnessRolling3.3
Elevation is not published; resort terrain suggests rolling. · Low confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 13% of the overall score.
- Air temperaturePleasant3.8
June highs reached about 27 °C (81 °F) in 2025 race week, with cooler mornings. · Low confidence
- Weather reliabilityVariable3.2
Wind chop on the lake and wildfire smoke worries in 2025. · Low confidence
- Venue beautyStunning4.6
Pedestrian resort village in a mountain and lake setting. · Medium confidence
- Spectator friendlyEasy4.0
Swim start and transition are watchable from the village, with a finish at Place des Voyageurs. · Low confidence
Course traits, not part of the score
- Low altitudeLow4.4
Village is about 250 m (820 ft) above sea level. · Medium confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 10% of the overall score.
- Hotel availabilityBook early2.5
About 5,000 triathletes in the same weekend, plus summer demand. · Low confidence
- Hotel valueNormal2.5
Peak resort pricing; no figures found. · Low confidence
- WalkabilityWalkable4.2
Transition, the IRONMAN village and the finish are close together in the pedestrian village. · Medium confidence
- Travel easeOne connection3.2
Montreal airport is about 130 km (81 mi) away by car. · Medium confidence
- LogisticsSimple3.5
One transition shared with other events. Packet pickup and parking were not found. · Low confidence
- Town and foodGood4.3
More than 70 shops and restaurants in the village. · Medium confidence
Key facts
- Location
- Mont-Tremblant, Quebec, Canada
- Typical month
- June
- Latest or next date
- 20 June 2026
- Organiser
- IRONMAN (5150 series)
- Field size
- About 1,800 athletes
- Distances
- 1.5 km (0.9 mi) swim, 40 km (24.9 mi) bike, 10 km (6.2 mi) run
- Swim venue
- Lac Tremblant (lake)
- Water temperature
- 16–19 °C (61–66 °F)
- Wetsuit
- Legal
- Swim start
- wave
- Swim laps
- 1
- Bike climbing
- 600 m (1,970 ft)
- Bike laps
- 2
- Key climbs
- Duplessis, climbed twice, about 300 m (980 ft) per lap per one poster
- Run shade
- Not stated.
- Air temperature
- 12–27 °C (54–81 °F)
- Humidity
- Not stated.
- Altitude
- 250 m (820 ft)
- Nearest airport
- Montreal-Trudeau (YUL), 130 km (81 mi) away
- Where to stay
- Pedestrian village, Lac Ouimet, Mont-Tremblant resort
- Booking
- About 5,000 triathletes across the 5150 and 70.3 weekend; book early. YUL is about 130 km (81 mi) by road (approximate); the small Mont-Tremblant airport (YTM) has limited service.
What racers and reviewers say
- Slowtwitch forum (Tremblant 70.3 / 5150 thread)Raced 2025 · forum · Mixed
Athletes preparing for 2025 say the 5150 bike climbs Duplessis twice, roughly 300 m (980 ft) per lap, with logging trucks and crumbling shoulders on Highway 117. Friday swim was choppy and about 18 °C (64 °F); the run is now fully paved; smoke and 27 °C (81 °F) heat were concerns; no sprint is offered on Saturday.
“a bit more than half an Alpe d'Huez”
- Slowtwitch (Bixi bike story)Raced 2025 · article · Positive
Profile of a first-time Olympic racer who finished 3:44:08 on a bike-share bike; mentions spectators and app tracking but no course description.
- Tremblant resort blogRaced 2025 · article · Positive
Organiser-side description: waves by class, a village IRONMAN zone with over 70 shops, spectator spots at the swim start, transition and Place des Voyageurs, and 800 volunteers. Marketing, used for logistics.
- Laurentides tourism listingRaced 2026 · article · Positive
Event listing: 20 June 2026, over 1,800 Olympic starters, 1.5 km (0.9 mi) swim in Lake Tremblant, 40 km (24.9 mi) bike through the region, over 5,000 triathletes across the weekend. No participant opinion.
Raced Triathlon 5150 Mont-Tremblant (Olympic)? Your notes on the course, conditions and logistics help the next athlete decide.
Sources
Pages we used for facts and ratings. See how we rate.
Training for Triathlon 5150 Mont-Tremblant (Olympic)? Moku Coach builds your plan around race day.