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Triathlon Atlas

Half distance · 25 July 2027

IRONMAN 70.3 Desaru Coast

Desaru, Malaysia

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
25 Jul 2027
Registration
Open
Swim venue
Ocean
Average water temperature
29 °C
Bike profile
Rolling
Bike elevation gain
436 m
Run profile
Rolling
Run elevation gain
147 m
High air temperature
32 °C
Low air temperature
28 °C
Overall cut-off
8 h 30 min
Entry fee, from
MYR 1,960
Altitude
22 m
First edition
2022
Swim start
Rolling start

Edition history

202626 Jul 2026Held
202525 May 2025Held
202419 May 2024Held
202314 May 2023Held
202224 Jul 2022Held

How the day is laid out

The swim is held in the ocean, from a rolling start. An average of 29 °C is warm. Wetsuit use is commonly restricted above this point, and the swim becomes a question of heat more than of cold.

The bike leg is labelled rolling.

The run is labelled rolling.

A rolling bike and a rolling run keep the effort changing all day, so pace by feel rather than by speed.

Expect air between 28 °C and 32 °C on race day. A spread of 4 degrees across the day matters as much as the peak, because what you wear at the swim exit is rarely what you want at the far end of the bike.

A swim without wetsuits, in 29 °C water

ironman.com announces a non-wetsuit swim, with the sea "hovering around 28C° - 29C°". Its Historical weather table gives 29 °C on race day in 2024, 2025 and 2026, and morning air lows of 28 °C in each of those years. The swim is one clockwise lap from the Westin Desaru Coast Resort beachfront, with a rolling start. The organiser describes a shaded run course. The same weekend also offers 5150, sprint and IRONKIDS races.

Source: ironman.com, read on 2 November 2026.

Against the calendar

Where this race sits among the others

Ranks are computed across every race of the same distance.

  • Average water temperature

    29 °C · median 21 °C

    The 6th warmest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    32 °C · median 25 °C

    The 16th hottest of the 152 middle-distance races with a figure, across every circuit.

  • Bike elevation gain

    436 m · median 569 m

    The 38th flattest of the 105 middle-distance races with a figure, across every circuit.

19

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

37

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

37

races are held in Asia. 1 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Desaru Coast 2027?
IRONMAN 70.3 Desaru Coast is held on 25 July 2027 in Desaru, Malaysia. Registration is open on the official race page.
Is a wetsuit allowed at IRONMAN 70.3 Desaru Coast?
Most likely not. The average water temperature is 29 °C, above the 28.8 °C limit beyond which wetsuits are banned. The official call is made on race morning.
What is the cut-off at IRONMAN 70.3 Desaru Coast?
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 Desaru Coast?
The bike course climbs about 436 m, the 38th flattest of 105 half-distance races with a figure. The bike is labelled rolling and the run rolling. Expect highs of about 32 °C on race day.
How much is the entry fee for IRONMAN 70.3 Desaru Coast?
Entries start at MYR 1,960 for an individual age-group entry, before service fees. Prices rise by tier as the race fills.

Where to stay

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

Suggested stay: 23 Jul 2027 to 26 Jul 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