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St Catherine's Island, Wales

IRONMAN Wales

Tenby, United KingdomFull distance19 September 2027

Photo: Quistnix at English Wikipedia, CC BY-SA 3.0 via Wikimedia Commons

341

days to race day

Checked against the organiser's own race page.

Wales race week and bags, in the app.

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IRONMAN Wales at a glance

Swim

3.8 km

Ocean, North Beach, Tenby, Ocean, 2 laps

Bike

180.2 km

Hilly, Pembrokeshire, 2 laps

Run

42.2 km

Hilly, Tenby, 4 laps

Race week, the last three years

Sea

17°C

16°C to 19°C in race week

Air

17°C

12°C at night

Rain

62%

of race-week days

Wind

27

km/h gusts on a typical day

Date
19 September 2027
Distance
Full, 3.8 / 180 / 42.2 km

Course from the organiser's course page. Weather: the seven days around the race date in 2023, 2024, 2025, averaged (Open-Meteo, ERA5). Sea is the sea off the town, not a reading of the swim. The water temperature that counts is the one officials measure on race morning.

IRONMAN Wales race week guide

Race week in three parts, the same three the Taperly app uses. Times and deadlines come from the athlete guide.

  1. 12 September 2027 to 17 September 2027

    Race week

    Everything that still has time to go wrong, while there is still time to fix it. Nothing you train this week makes you faster on the day, but plenty of it can make you slower.

    Must do: Read the athlete guide properly, Check your race entry and category are right, Final equipment check: tyres, brakes, gears, cleats, Arrange care for kids or pets.

  2. On site, by 18 September 2027

    At the race

    A long day of small errands in a town you do not know, and then an early night. Do them in an order you decided in advance.

    Must do: Athlete check-in, Timing chip somewhere you cannot leave without it.

  3. 19 September 2027

    Race day

    If the week went well, this is only a list of things to pick up and put down. It ends when the horn goes, because from there nobody is holding a phone.

    Must do: Timing chip on, Race number, Bike on your own rack number.

The full race week checklist

Taperly plan with the prep phases and what is left

The same race week, planned day by day in the app.

Packing list for Wales

What goes in each bag. The full list, to tick off bag by bag, is in the app.

IRONMAN Wales: questions

When is IRONMAN Wales?

IRONMAN Wales is on 19 September 2027, in Tenby, United Kingdom. The date is checked against the organiser's own race page.

What is the water temperature at IRONMAN Wales?

The sea off Wales has been around 17°C in race week (16°C to 19°C over 2023, 2024, 2025). Whether wetsuits are allowed is decided on race morning from the measured water temperature.

What is the IRONMAN Wales course like?

Swim 3.8 km, Ocean, North Beach, Tenby, Ocean, 2 laps. Bike 180.2 km, Hilly, Pembrokeshire, 2 laps. Run 42.2 km, Hilly, Tenby, 4 laps. Read from the organiser's course page.

What is the weather like at IRONMAN Wales?

In race week it has been 12°C at night and 17°C in the day, with rain on 62% of days and gusts around 27 km/h (2023, 2024, 2025).

What should I pack for IRONMAN Wales?

Everything sorted by the bag it goes in: what you wear, the morning bag, the bike bag and the run bag. The full list, with what changes for Wales, is free in the Taperly app.

Racing something else?

Other races this season