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Triathlon Atlas

Half distance · 2 May 2027

IRONMAN 70.3 Western Sydney

Penrith, 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
2 May 2027
Registration
Open
Swim venue
Lake
Average water temperature
19 °C
Bike profile
Flat
Bike elevation gain
206 m
Run profile
Flat
Run elevation gain
52 m
High air temperature
21 °C
Low air temperature
13 °C
Overall cut-off
8 h 30 min
Altitude
32 m
First edition
2014
Swim start
Rolling start

Edition history

20263 May 2026Held
202521 Sept 2025Held
202422 Sept 2024Held
202324 Sept 2023Held
202225 Sept 2022Held
201924 Nov 2019Held
201825 Nov 2018Held
201726 Nov 2017Held
201627 Nov 2016Held

How the day is laid out

The swim is held in a lake. An average of 19 °C sits in the range where a wetsuit is both allowed and worth wearing for nearly everyone.

The bike leg is labelled flat.

The run is labelled flat.

A flat bike followed by a flat run is the most predictable combination on the calendar. It removes climbing and the descents that come with it, so power output stays constant for the whole bike leg and wind becomes the main variable.

Expect air between 13 °C and 21 °C on race day. A spread of 8 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.

Against the calendar

Where this race sits among the others

Ranks are computed across every race of the same distance.

  • Average water temperature

    19 °C · median 21 °C

    The 30th coldest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    21 °C · median 25 °C

    The 21st coolest of the 152 middle-distance races with a figure, across every circuit.

  • Bike elevation gain

    206 m · median 569 m

    The 15th flattest of the 105 middle-distance races with a figure, across every circuit.

43

races of this distance pair a flat bike with a flat run, out of 159. 53 share the bike profile alone.

32

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

28

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

Questions about this race

When is IRONMAN 70.3 Western Sydney 2027?
IRONMAN 70.3 Western Sydney is held on 2 May 2027 in Penrith, Australia. Registration is open on the official race page.
Is a wetsuit allowed at IRONMAN 70.3 Western Sydney?
Most likely. The average water temperature is 19 °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 Western Sydney?
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 Western Sydney?
The bike course climbs about 206 m, the 15th flattest of 105 half-distance races with a figure. The bike is labelled flat and the run flat. Expect highs of about 21 °C on race day.

Where to stay

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

Suggested stay: 30 Apr 2027 to 3 May 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