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Triathlon Atlas

Half distance · 17 October 2027

IRONMAN 70.3 Poreč

Porec, Croatia

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
17 Oct 2027
Registration
Sold out
Swim venue
Ocean
Average water temperature
18 °C
Bike profile
Rolling
Bike elevation gain
680 m
Run profile
Rolling
Run elevation gain
130 m
High air temperature
21 °C
Low air temperature
11 °C
Overall cut-off
8 h 30 min
Altitude
4 m
First edition
2022
Swim start
Rolling start

Edition history

202618 Oct 2026Held
202519 Oct 2025Held
202420 Oct 2024Held
202315 Oct 2023Held
202216 Oct 2022Held

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 18 °C at this time of year.

The bike course is rolling, with about 680 m of climbing.

The run course is rolling, with about 130 m of climbing.

Typical temperatures for the month run from 11 to 21 °C. The overall cut-off is 8 h 30 min.

The race was first held in 2022.

A point-to-point swim in a sheltered cove

The swim starts in front of the Hotel Parentium Plava Laguna and runs point to point, clockwise, inside the protected Plava Laguna cove. The race page shows an average water temperature of 18 °C; the race-day readings in its Historical weather table were 19 °C in 2024 and 2025 and 22 °C in 2026. Morning air lows ranged from 7 to 16 °C over those years, a wide spread for a mid-October date. On 2 November 2026, registration for 17 October 2027 was open and relay entries were sold out.

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

    18 °C · median 21 °C

    The 19th 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

    680 m · median 569 m

    The 45th hilliest 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.

32

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

160

races are held in Europe. 14 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Poreč 2027?
IRONMAN 70.3 Poreč is held on 17 October 2027 in Porec, Croatia. The race is sold out.
Is a wetsuit allowed at IRONMAN 70.3 Poreč?
Most likely. The average water temperature is 18 °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 Poreč?
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 Poreč?
The bike course climbs about 680 m, the 45th hilliest of 105 half-distance races with a figure. The bike is labelled rolling and the run rolling. 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: 15 Oct 2027 to 18 Oct 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