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Triathlon Atlas

Half distance · 4 October 2026

IRONMAN 70.3 Buenos Aires Palermo

Buenos Aires, Argentina

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
Most recent edition
4 Oct 2026
Registration
Closed
Swim venue
Lake
Average water temperature
23 °C
Bike profile
Rolling
Run profile
Flat
Run elevation gain
94 m
High air temperature
22 °C
Low air temperature
15 °C
Overall cut-off
8 h 30 min
Altitude
25 m
First edition
2016
Swim start
Rolling start

Edition history

20252 Nov 2025Held
20243 Nov 2024Held
202329 Oct 2023Held

The date of the next edition has not been announced yet.

How the day is laid out

The swim is held in a lake. 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.

The run course is flat, with about 94 m of climbing.

Typical temperatures for the month run from 15 to 22 °C. The overall cut-off is 8 h 30 min.

The race was first held in 2016.

What the course page adds

The swim is two loops of Lago Regatas, in the middle of Palermo. The bike covers three loops on a Buenos Aires highway, and the run stays on the streets and paths of Palermo.

The course page calls the bike loops flat, while the race header labels the bike rolling. The elevation profile in the athlete guide settles it before you choose your gearing.

Source: IRONMAN, course page (ironman.com).

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

    22 °C · median 25 °C

    The 32nd coolest of the 152 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.

32

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

43

races are held in Latin America. 5 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Buenos Aires Palermo 2026?
IRONMAN 70.3 Buenos Aires Palermo is held on 4 October 2026 in Buenos Aires, Argentina. Registration is closed.
Is a wetsuit allowed at IRONMAN 70.3 Buenos Aires Palermo?
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 Buenos Aires Palermo?
The course closes 8 h 30 min after the start. Intermediate cut-offs after the swim and the bike are in the athlete guide.

Where to stay

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

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