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Triathlon Atlas

Full distance · 7 August 2027

IRONMAN Tallinn

Tallinn, Estonia

The race at a glance

Official race website
Circuit
IRONMAN
Distance
Full distance
Terrain
Road
Swim
3.8 km
Bike
180 km
Run
42.2 km
Date
7 Aug 2027
Registration
Open
Swim venue
Lake
Average water temperature
18 °C
Bike profile
Rolling
Bike elevation gain
635 m
Run profile
Flat
Run elevation gain
82 m
High air temperature
21 °C
Low air temperature
13 °C
Overall cut-off
17 h
Entry fee, from
€880
Altitude
12 m
First edition
2018
Swim start
Rolling start

Edition history

202622 Aug 2026Held
202523 Aug 2025Held
202424 Aug 2024Held
20235 Aug 2023Held
20226 Aug 2022Held
20217 Aug 2021Held
20193 Aug 2019Held
20184 Aug 2018Held

How the day is laid out

The swim is held in a lake. An average of 18 °C sits in the range where a wetsuit is both allowed and worth wearing for nearly everyone.

The bike leg is labelled rolling.

The run is labelled flat, over 4 laps, with 4 aid stations.

A rolling bike ahead of a flat run keeps the climbing on the bike and lets the run settle into a rhythm.

Expect air between 13 °C and 21 °C on race day. A spread of 8 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.

A new swim venue in Lake Raku, with no water reading yet

The 3.8 km swim is now a single loop in Lake Raku, which ironman.com presents as a new venue: clear water, a sandy bed, an average depth of 6.4 m and a maximum of 18.7 m. The Historical weather table has no water reading for 2024, 2025 or 2026, so the 18 °C average shown on the race page cannot be checked against race days yet. Morning air lows were 11 to 16 °C. ironman.com calls the course fast and flat, "unless the wind plays a trick on you". The competition centre is by the Baltic Sea.

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 22 °C

    The 5th coldest of the 48 full-distance races with a figure, across every circuit.

  • High air temperature

    21 °C · median 25 °C

    The 10th coolest of the 52 full-distance races with a figure, across every circuit.

  • Bike elevation gain

    635 m · median 1130 m

    The 11th flattest of the 43 full-distance races with a figure, across every circuit.

13

races of this distance pair a rolling bike with a flat run, out of 55. 20 share the bike profile alone.

42

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

160

races are held in Europe. 32 of them in the same month as this one.

Questions about this race

When is IRONMAN Tallinn 2027?
IRONMAN Tallinn is held on 7 August 2027 in Tallinn, Estonia. Registration is open on the official race page.
Is a wetsuit allowed at IRONMAN Tallinn?
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 Tallinn?
The course closes 17 h after the start. Intermediate cut-offs after the swim and the bike are in the athlete guide.
How hard is IRONMAN Tallinn?
The bike course climbs about 635 m, the 11th flattest of 43 full-distance races with a figure. The bike is labelled rolling and the run flat. Expect highs of about 21 °C on race day.
How much is the entry fee for IRONMAN Tallinn?
Entries start at €880 for an individual age-group entry, before service fees. Prices rise by tier as the race fills.

Where to stay

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

Suggested stay: 5 Aug 2027 to 8 Aug 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