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Triathlon Atlas

Half distance · 20 June 2027

IRONMAN 70.3 Westfriesland

Hoorn, Netherlands

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
20 Jun 2027
Registration
Sold out
Swim venue
Lake
Average water temperature
17 °C
Bike profile
Flat
Run profile
Flat
High air temperature
21 °C
Low air temperature
14 °C
Overall cut-off
8 h 30 min
Altitude
3 m
First edition
2021
Swim start
Rolling start

Edition history

202621 Jun 2026Held
202522 Jun 2025Held
202423 Jun 2024Held
202325 Jun 2023Held
202226 Jun 2022Held
202126 Sept 2021Held

How the day is laid out

The swim is held in a lake. An average of 17 °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 14 °C and 21 °C on race day. A spread of 7 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

    17 °C · median 21 °C

    The 8th 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.

43

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

58

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

160

races are held in Europe. 40 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Westfriesland 2027?
IRONMAN 70.3 Westfriesland is held on 20 June 2027 in Hoorn, Netherlands. The race is sold out.
Is a wetsuit allowed at IRONMAN 70.3 Westfriesland?
Most likely. The average water temperature is 17 °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 Westfriesland?
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.

Suggested stay: 18 Jun 2027 to 21 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