Skip to content
Triathlon Atlas

Half distance · 13 June 2027

IRONMAN 70.3 Cairns

Cairns, Australia

The race at a glance

Official race website
Circuit
IRONMAN
Distance
Middle distance
Terrain
Road
Swim
1.9 km
Bike
90 km
Run
21.1 km
Date
13 Jun 2027
Registration
Open
Swim venue
Ocean
Average water temperature
23 °C
Bike profile
Rolling
Bike elevation gain
520 m
Run profile
Flat
Run elevation gain
25 m
High air temperature
29 °C
Low air temperature
18 °C
Overall cut-off
8 h 30 min
Altitude
7 m
First edition
2012
Swim start
Rolling start

Edition history

202614 Jun 2026Held
202515 Jun 2025Held
202416 Jun 2024Held
202318 Jun 2023Held
202212 Jun 2022Held
20216 Jun 2021Held
202027 Sept 2020Held
20199 Jun 2019Held
201810 Jun 2018Held
201711 Jun 2017Held

How the day is laid out

The swim is held in the ocean. The wetsuit call is made on race morning, against the temperature measured then.

The organiser publishes 1.9 km of swimming, 90 km on the bike and 21.1 km of running.

The swim uses a rolling start: athletes enter the water a few at a time. The water is usually around 23 °C at this time of year.

The bike course is rolling, with about 520 m of climbing.

The run course is flat, with about 25 m of climbing.

Typical temperatures for the month run from 18 to 29 °C. The overall cut-off is 8 h 30 min.

The race was first held in 2012.

Against the calendar

Where this race sits among the others

Ranks are computed across every race of the same distance.

  • Average water temperature

    23 °C · median 21 °C

    The 48th warmest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    29 °C · median 25 °C

    The 40th hottest of the 152 middle-distance races with a figure, across every circuit.

  • Bike elevation gain

    520 m · median 569 m

    The 47th flattest of the 105 middle-distance races with a figure, across every circuit.

33

races of this distance pair a rolling bike with a flat run, out of 159. 58 share the bike profile alone.

58

races across every distance fall in June, out of 354.

28

races are held in Oceania. 2 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Cairns 2027?
IRONMAN 70.3 Cairns is held on 13 June 2027 in Cairns, Australia. Registration is open on the official race page.
Is a wetsuit allowed at IRONMAN 70.3 Cairns?
Most likely. The average water temperature is 23 °C, below the 24.5 °C limit up to which wetsuits are allowed for age-group athletes. The official call is made on race morning.
What is the cut-off at IRONMAN 70.3 Cairns?
The course closes 8 h 30 min after the start. Intermediate cut-offs after the swim and the bike are in the athlete guide.
How hard is IRONMAN 70.3 Cairns?
The bike course climbs about 520 m, the 47th flattest of 105 half-distance races with a figure. The bike is labelled rolling and the run flat. Expect highs of about 29 °C on race day.

Where to stay

Hotels and rentals around the race venue, for the nights around race day.

Suggested stay: 11 Jun 2027 to 14 Jun 2027

The map is provided by Stay22. Bookings are made with the provider.

Races of the same distance in the same region

Entries are handled by the organiser

Registration and the athlete guide are on the official race page.

Open the official race page