IRONMAN 70.3 Cairns
Cairns (Palm Cove), Australia · June · IRONMAN 70.3
Why people love it
- Beach swim from Palm Cove with an island backdrop in the Coral Sea
- Spectator-friendly: bike turnaround a few blocks from the swim exit
- Coastal bike scenery on the Captain Cook Highway
- June is one of the driest months in tropical Queensland
Watch out for
- Ocean chop and stingers: calm one year, rough surf another
- Strong ocean headwinds on the bike and run reported across several years
- Palm Cove swim and Cairns finish are separate areas, with shuttles and a long T1 walk
- Much of the coverage is of the full-distance race on the same course
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 27% of the overall score.
- Racer satisfactionLoved4.0
Reviewers praise the setting, spectator turnaround and crowds. Wind and rough-water days temper it. · Medium confidence
- OrganizationWell run4.1
Slowtwitch praised the logistics, shuttles and event focus. A long T1 walk was noted in 2016. · Medium confidence
- First timer friendlyDoable3.2
Ocean swim with possible chop and stingers, plus wind on a rolling bike. Spectator-friendly. · Medium confidence
Course traits, not part of the score
- PR potentialAverage3.4
Winners went 3:48:54 in 2015 and 3:50:54 in the wet 2014. Rollers and headwinds slow the course. · Medium confidence
- Course easeTough3.0
Wind and rollers more than climbs, plus tropical humidity and an ocean swim. · Medium confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalCoin flip3.1
Water was 25.5 °C (78 °F) in 2016, but a stinger exemption let athletes wear suits. · Low confidence
- Water temperatureAcceptable3.3
25.5 °C (78 °F) was reported in 2016, in the warm band. · Medium confidence
- Calm waterSome chop2.8
Calm in 2013 and the 2016 lead-in, then a 'washing machine' race day. Also choppy in 2015 and 2021. · Medium confidence
- Swim easeModerate3.4
Ocean swim along the beach. Surf shortened the swim for slower athletes in 2016. · Medium confidence
- Swim experienceGreat3.9
Palm Cove beach start with islands behind, though stingers are a consideration. · Medium confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood3.6
Coastal highway. Rain-slick roads caused crashes in 2016. · Low confidence
- Road closuresMostly closed4.2
Coastal highway course shared with the full distance and well marshalled. · Low confidence
- Bike scenerySpectacular4.6
Coral Sea coastline, headlands and rainforest on the Captain Cook Highway. · Medium confidence
- WindWindy2.0
Multiple reports of strong ocean headwinds on the bike and run (2013, 2019, 2021). · Medium confidence
Course traits, not part of the score
- Bike speedAverage3.2
Constantly rolling coast road in steady ocean wind. Pro splits were 2:08-2:14. · Medium confidence
- Bike flatnessRolling3.2
Reports describe constant rollers. No elevation total was found. · Low confidence
- Bike simplicityMostly simple3.8
Highway out-and-back with a turnaround. Wet-weather crashes were noted. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong3.8
Slowtwitch noted spectators three deep on the four-lap run, mostly at the full-distance race. · Medium confidence
- Aid stationsGood4.1
IRONMAN-scale event with abundant volunteers per coverage. · Low confidence
- Run sceneryBeautiful3.8
Flat Esplanade with shaded sidewalks and waterfront. · Low confidence
- Run conditionsModerate3.0
The 2013 run was exposed and brutal into a headwind, with tropical humidity. · Medium confidence
Course traits, not part of the score
- Run flatnessFlat4.5
The Esplanade run is described as the flat leg. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperaturePleasant4.0
June runs roughly 19-27 °C (66-81 °F). 2015 turned hot, 2014 was cold and wet. · Medium confidence
- Weather reliabilityReliable3.6
June is among the drier months, but 2014 and 2016 saw steady rain. · Medium confidence
- Venue beautyStunning4.6
Palm Cove beach, tropical coast and the Cairns waterfront. · Medium confidence
- Spectator friendlyEasy4.3
The bike turnaround is a few blocks from the swim exit, and the run is multi-lap. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level5.0
Sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood3.8
Tourist city with ample hotels, but a combined field of over 2,800 in 2025. · Low confidence
- Hotel valueNormal3.3
Australian tourist pricing. No race-week data. · Low confidence
- WalkabilitySome driving3.2
Palm Cove swim and T1 are separate from the Cairns Esplanade finish, so shuttles are needed. · Low confidence
- Travel easeOne connection3.4
Cairns airport is about 20 km (12 mi) away, with international flights mostly via Sydney or Brisbane. · Low confidence
- LogisticsSome complexity3.2
Two venues, Palm Cove and Cairns, with shuttles and a long T1 walk. · Medium confidence
- Town and foodGood4.3
Walkable Esplanade with cafes and shops. · Medium confidence
Key facts
- Location
- Cairns (Palm Cove), Queensland, Australia
- Typical month
- June
- Latest or next date
- 13 June 2027
- Organiser
- IRONMAN 70.3
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Palm Cove (Coral Sea) (ocean)
- Water temperature
- 24–26 °C (75–79 °F)
- Wetsuit
- Optional
- Run shade
- Shaded Esplanade sidewalks reported for the full-distance run
- Air temperature
- 19–27 °C (66–81 °F)
- Humidity
- Tropical
- Altitude
- 5 m (16 ft)
- Nearest airport
- Cairns (CNS), 20 km (12 mi) away
- Where to stay
- Palm Cove, Cairns Esplanade
- Booking
- Combined 70.3/140.6 fields of 2,800+ age-groupers in 2025.
What racers and reviewers say
- Slowtwitch: Final Thoughts on the Race in Paradisearticle · Positive
Spectator-minded review of the Cairns event: scenic Palm Cove swim, rollers and a headwind-prone bike with a turnaround near the swim exit, a four-lap flat run with deep crowds, and praise for organization and shuttles.
“Crowd support among the best she has seen.”
- Slowtwitch: IM Cairns 2016 swim and bikeRaced 2016 · article · Mixed
Race-day account: calm lead-in water turned into rough surf, the swim was shortened for slower athletes, water was 25.5 C (78 F), and the rolling coastal road plus slick rain caused flats and crashes. 70.3 and 140.6 share the course.
- Trizone: Atkinson wins 70.3 Cairns 2013Raced 2013 · article · Mixed
Winners described strong wind: tailwind out, headwind back, and a run into the wind. Atkinson and Kahlefeldt called it among the toughest races they had done.
“I have never raced such a tough race.”
- Tri Alliance: IM Cairns 2013 race reportRaced 2013 · blog · Mixed
Squad report: calm water at the start, wind picking up on the bike with showers and humidity, and an exposed, flat, deceptively brutal 70.3 run through cane fields with a headwind. Many first-timers and PBs.
- Trizone: Kahlefeldt and Hammond win 2014Raced 2014 · article · Mixed
Cold, wet race with rain throughout; a tight lead swim group, punctures ending podium chances, and winners 3:50:54 and 4:24:03. Winner called conditions fine for racing.
Show 4 more
- Triathlete: Appleton, Steffen on topRaced 2015 · article · Positive
2015 results: wet start, hot tropical finish; Appleton 3:48:54 and Steffen 4:19:40.
- Slowtwitch: Jacobs, Crowley take Cairns 70.3Raced 2012 · article · Positive
2012 results with splits: Jacobs won 3:55:51 with a 2:11:50 bike, Crowley 4:23:27.
- Australian Defence news: 2021 athletesRaced 2021 · article · Mixed
Service-member accounts from 2021 describing a choppy swim and a hilly bike with a headwind for much of the return from Port Douglas.
- Cairns Airport: another successful IRONMANarticle · Positive
Local media release describing the swim at Palm Cove, the scenic Captain Cook Highway bike to Port Douglas and back, and a run along the Esplanade.
Sources
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