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Tallinn Old Town, Tallinn

IRONMAN 70.3 Tallinn

Tallinn, EstoniaHalf distance8 August 2027

Photo: Ivar Leidus (Iifar), CC BY-SA 3.0 ee via Wikimedia Commons

299

days to race day

Checked against the organiser's own race page.

Tallinn race week and bags, in the app.

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IRONMAN 70.3 Tallinn at a glance

Swim

1.9 km

Bike

90 km

Run

21.1 km

Race week, the last three years

Air

22°C

14°C at night

Rain

43%

of race-week days

Wind

19

km/h gusts on a typical day

Date
8 August 2027
Where
Tallinn, Estonia
Distance
Half, 1.9 / 90 / 21.1 km
Official page
ironman.com/races/im703-tallinn

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.

The course at Tallinn

Swim
Lake Raku, fresh water, sandy bed and around 6.4 m average depth.
Bike
Flat, 90 km out to the southern villages, back past the Unibet Arena and out into the countryside again. The official route file is unpublished, so the lap count is unconfirmed.
Run
Two laps, 21.1 km with 87 m of gain, along Tallinn Bay and finishing at the Unibet Arena.

Course read from Unbroken's published course guide. Verify everything against the official athlete guide for your season.

What that changes in your bags

Ten calendar years put race day between roughly 13 and 20 degrees with a median daily gust of 18 km/h. That is the temperature where athletes pack for the swim and forget the bike: cold hands on a flat course cost more than they do on a climb, because nothing warms you up.

IRONMAN 70.3 Tallinn race week guide

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

  1. 1 August 2027 to 6 August 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 7 August 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. 8 August 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.

Download on theApp Store

Packing list for Tallinn

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

IRONMAN 70.3 Tallinn: questions

When is IRONMAN 70.3 Tallinn?

IRONMAN 70.3 Tallinn is on 8 August 2027, in Tallinn, Estonia. The date is checked against the organiser's own race page.

What is the IRONMAN 70.3 Tallinn course like?

Swim 1.9 km. Bike 90 km. Run 21.1 km. Read from the organiser's course page.

What is the weather like at IRONMAN 70.3 Tallinn?

In race week it has been 14°C at night and 22°C in the day, with rain on 43% of days and gusts around 19 km/h (2023, 2024, 2025).

What should I pack for IRONMAN 70.3 Tallinn?

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 Tallinn, is free in the Taperly app.

Racing something else?

Other races this season