IRONMAN Cairns
Cairns (swim at Palm Cove), Australia · June · IRONMAN
Why people love it
- Fully closed Captain Cook Highway with ocean and rainforest views
- Flat four-lap run with huge Esplanade crowds, 5th best run globally (2024 Global Awards)
- Warm swim voted 2nd best in the world (2024), at 23-25 °C (73-77 °F)
- Dry-season winter weather with race-day air around 17-26 °C (63-79 °F)
Watch out for
- Persistent headwind over the final 55-60 km (34-37 mi) of the ride
- Surf and chop at Palm Cove can be rough; 2025 lap 2 mixed full and 70.3 swimmers
- Point-to-point: swim is about 25 km (16 mi) north of the finish
- Rolling bike of about 1,252 m (4,108 ft) gain (approximate); little shade on the run
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 satisfactionLoved4.4
Named 2nd best swim and 5th best run at the 2024 IRONMAN Global Awards, with upbeat reports. Rough swims and headwind hold it back. · Medium confidence
- OrganizationWell run4.3
A fully closed highway and strong volunteers. Split transitions add load, and a 2024 pro found bike aid sparse. · Medium confidence
- First timer friendlyDoable3.3
Closed roads and big support, but surf swims, a long headwind and heat. Point-to-point logistics add complexity. · Low confidence
Course traits, not part of the score
- PR potentialAverage3.2
The 2026 men's winner ran 7:49:48, but about 1,252 m (4,108 ft) of rolling gain and a late headwind slow the bike. · Medium confidence
- Course easeTough2.8
About 1,252 m (4,108 ft) of bike gain, 'deceptively hard', plus constant wind and sun with little run shade. The flat marathon balances it. · Medium confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalCoin flip3.4
Water is typically 23-25 °C (73-77 °F), and hit 25.5 °C (78 °F) in 2016. Close to the 24.5 °C (76.1 °F) limit; wetsuits optional. · Medium confidence
- Water temperatureComfortable3.8
23-25 °C (73-77 °F) is on the warm side, and pros say warm water tires you over 3.8 km (2.4 mi). · Medium confidence
- Calm waterSome chop2.6
Open-ocean surf at Palm Cove: a 'washing machine' in 2016 and about 1 m (3 ft) chop in 2025, but fine in 2024. · Medium confidence
- Swim easeModerate2.8
A rolling start helps, but chop, surf and (in 2025) full and 70.3 swimmers mixing on lap 2 made it crowded and slow. · Medium confidence
- Swim experienceGreat4.3
Voted 2nd best swim at the 2024 Global Awards: warm and scenic at Palm Cove, though rough in some years. · Medium confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood4.0
A major highway closed for the race, with no complaints found. Rain-slicked roads in 2016 caused flats and crashes. · Low confidence
- Road closuresFully closed4.8
Captain Cook Highway is fully closed. · High confidence
- Bike scenerySpectacular4.7
Coral Sea on one side and rainforest on the other, among the most scenic bikes. · High confidence
- WindWindy2.0
Repeated reports of ocean wind and gusts, a 30 km (18.6 mi)/h (19 mph) south-easterly, and a headwind over the last 55-60 km (34-37 mi). · High confidence
Course traits, not part of the score
- Bike speedAverage3.1
Rolling with a persistent south-easterly headwind on the return and about 1,252 m (4,108 ft) of gain. · Medium confidence
- Bike flatnessRolling3.0
About 1,252 m (4,108 ft) of gain per GPS files (approximate), so hilly. Rex Lookout is the main climb. · Medium confidence
- Bike simplicitySome technical parts3.4
A narrow road with sloping turns and rollers. No major technical descents. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportElectric4.6
Four Esplanade loops with big crowds and bars. Named best run in Oceania at the 2024 Global Awards. · High confidence
- Aid stationsGood4.0
Enthusiastic volunteers, but a 2024 pro found bike aid stations sparse in the heat. · Medium confidence
- Run sceneryBeautiful4.0
The Esplanade, lagoon and Coral Sea. · Medium confidence
- Run conditionsEasy3.6
Flat and well supported, but dry heat around 26 °C (79 °F), little shade and low-tide mudflats that feel warm. · Medium confidence
Course traits, not part of the score
- Run flatnessFlat4.9
Four flat laps on the Esplanade. · High confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperaturePleasant4.3
Race-day air is typically 17-26 °C (63-79 °F), sometimes humid near 27 °C (81 °F). · Medium confidence
- Weather reliabilityReliable3.6
Dry-season winter. Wind is near-certain, storms are rare, with occasional showers (2016, 2017). · Low confidence
- Venue beautyStunning4.6
Tropical coast with rainforest and reef nearby. · High confidence
- Spectator friendlySome viewpoints3.2
Esplanade run loops are easy to watch, but the swim and T1 are about 25 km (16 mi) north at Palm Cove. · Low confidence
Course traits, not part of the score
- Low altitudeSea level5.0
Sea level, 5 m (16 ft). · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityBook early3.3
A tourist hub with many beds, but race week is peak season and Palm Cove fills early. · Low confidence
- Hotel valueNormal3.0
No pricing data found. A resort destination. · Low confidence
- WalkabilityMostly driving2.3
Swim at Palm Cove and finish in Cairns are about 25 km (16 mi) apart. · Low confidence
- Travel easeOne connection3.2
Cairns (CNS) has international flights but is remote, roughly 6 h from Singapore. · Low confidence
- LogisticsFiddly2.4
Point-to-point with split transitions at Palm Cove and Fogarty Park. · Medium confidence
- Town and foodGreat4.5
Esplanade restaurants and bars, with reef and rainforest excursions. · Medium confidence
Key facts
- Location
- Cairns (swim at Palm Cove), Queensland, Australia
- Typical month
- June
- Latest or next date
- 14 June 2026
- Organiser
- IRONMAN
- Field size
- About 1,188 athletes
- Distances
- 3.8 km (2.4 mi) swim, 180 km (112 mi) bike, 42.2 km (26.2 mi) run
- Swim venue
- Palm Cove (Williams Esplanade) (ocean)
- Water temperature
- 23–25 °C (73–77 °F)
- Wetsuit
- Optional
- Swim start
- rolling
- Swim laps
- 2
- Bike laps
- 2
- Key climbs
- Rex Lookout
- Run laps
- 4
- Run shade
- Little shade; dry heat
- Air temperature
- 18–26 °C (64–79 °F)
- Humidity
- moderate
- Altitude
- 5 m (16 ft)
- Nearest airport
- Cairns Airport (CNS)
- Where to stay
- Palm Cove, Cairns CBD / Esplanade
- Booking
- Swim start is ~30 min north at Palm Cove; many athletes add a holiday
What racers and reviewers say
- Piquing My Interest (Hannah Berry)Raced 2025 · blog · Positive
Second place in 8:46 and a Kona slot. Calls out the trademark headwind on the ride back that made the bike harder than the year before, though it kept her cool. Ran a marathon PB and her strongest IRONMAN finish.
- Mackay & Whitsunday Life: local triathletesRaced 2025 · article · Positive
Reports reasonable swim conditions after a rough 'washing machine' day before, gusts on the closed coastal highway, a hilly stunning bike and a flat run with amazing crowd support and volunteers. Athletes finished smiling.
- SportPlus.sg: first-timer's guide to the Race in ParadiseRaced 2025 · article · Positive
Singapore athletes' view: choppier-than-usual swim, rolling bike with constant headwind from Port Douglas to T2 and a Rex Lookout climb, and a flat, loud run voted 5th best globally. Early June highs about 26 °C (79 °F) with dry heat; cheering kids kept people running.
- Slowtwitch: IM Cairns 2016 reportRaced 2016 · article · Mixed
2016 conditions: rough surf like a giant washing machine, water around 25.5 °C (78 °F), deceptively hard rolling bike with constant ocean wind and rain-slicked roads, several pros flatting or crashing; swim cut short for slower athletes.
- Trizone: preview 2017 Ironman Asia Pacific ChampionshipRaced 2017 · article · Mixed
Preview notes single-lap surf swim that can be very choppy, bike along the Captain Cook Highway with wind as a major factor, and a run on the Esplanade. Weather varies widely and many arrive a week early to acclimatise.
Show 8 more
- Slowtwitch: Cairns 2024 previewRaced 2024 · article · Positive
Describes a two-lap swim at ~23 °C (73 °F) where pros warned warm water tires you, an out-and-back bike with rollers and a lookout on a narrow road, and a flat four-lap run with spectators and little shade.
- Cairns Airport: Ironman 2017 recapRaced 2017 · article · Positive
Sponsor recap: over 3,000 athletes across full and 70.3, near-ideal 17-26 °C (63-79 °F) weather with some afternoon showers, and good crowds at the finish.
- RaceRaves: IRONMAN 70.3 Cairns (aquabike reviewer)Raced 2026 · aggregator · Mixed
Same roads as the full: reviewer described a choppy swim with ~1 m (3 ft) wind chop and a 30 km (18.6 mi)/h (19 mph) south-easterly giving a headwind for 55 km (34 mi) to the finish. Based on search summary; single athlete.
- 220 Triathlon: Ironman Cairns 2026 reportRaced 2026 · article · Positive
Race report on Nick Thompson's 7:49:48 victory and Penny Slater's win; confirms Kona slots on offer. Page returned 403; based on search summary.
- Slowtwitch forum: IRONMAN Cairns thread (page 2)Raced 2025 · forum · Mixed
Race-eve discussion of 2025: a local argued June is cool-season and not truly hot, while others noted humid ~27 °C (81 °F) days in past years and a cooling south-easterly that gives a long headwind over the last 60 km (37 mi) of the bike. Another local linked the warm-feeling run to low tide exposing mudflats. No elevation figure was offered.
- Slowtwitch forum: IRONMAN Cairns thread (page 3, race day)Raced 2025 · forum · Mixed
Live race-day comments on 2025: an age-grouper-turned-commentator said the swim was rough and crowded as full and 70.3 swimmers mixed on the second lap, with slower times than usual. Pros faded on the final 20 km (12 mi) of the bike from the headwind, and the run was widely called epic.
“pretty choppy swim and messy with lots of age groupers around”
- SportPlus.sg: 5 reasons IRONMAN Cairns is your next race-cationRaced 2025 · article · Positive
Travel feature quoting Singapore athletes from 2025. Locals come out along the bike route, strong headwinds test riders, and Esplanade spectators lined the finish area. Athletes credited the crowds and kids for pulling them through the run, and the place works well as a holiday trip.
“The kids were cheering! So, you're left with no choice but to run.”
- Piquing My Interest: IRONMAN Cairns Countdown (Hannah Berry)Raced 2025 · blog · Mixed
Pro's pre-race post recalling 2024: she felt hot and thirsty and found bike aid stations sparse, so she planned to carry extra water in 2025. A pro-level perspective rather than age-group, but useful on heat and aid.
“I remember feeling hot and thirsty in 2024”
Sources
Pages we used for facts and ratings. See how we rate.
Training for IRONMAN Cairns? Moku Coach builds your plan around race day.