IRONMAN 70.3 Tallinn

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 The official route file is unpublished, so the lap count is unconfirmed.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 2027

Date for 2027 not announced yet. The 2026 edition has been raced, and this page shows the 2027 date once it has been checked.

IRONMAN 70.3 Tallinn athlete guide: what to check

The athlete guide is the organiser's own document for the race, published on the organiser's own race page. It is the source of truth, and these are the parts that change your plan and move from year to year.

Check-in times

When athlete check-in opens and closes, and what ID to bring. Race number and timing chip are handed out there.

Bag rules

Which bags there are (morning clothes, bike gear, run gear), when each is handed in, whether the bike is racked the day before, and when transition closes.

Wetsuit rule

The water temperature limits for wetsuits. Officials make the call on the day from a measured temperature, not from the forecast.

Course

Maps, laps and elevation for the swim, bike and run, plus the drafting and mount line rules. The course at Tallinn is summarised above.

Cut-offs

The time limit for each leg. They differ between races and between a Half and a Full, so read the ones for this Half.

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. The 7 days before

   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. Once you arrive

   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. Race morning

   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

IRONMAN 70.3 Tallinn nutrition and equipment

What to carry for each leg of a Half, taken from the packing list below.

Swim

Trisuit, Timing chip, Goggles, Spare goggles, Swim cap, Wetsuit. The wetsuit depends on the water temperature call.

Bike

Helmet, Race number belt, Race number, Number stickers on bike and helmet, Cycling shoes, Both wheels on the bike. Fuel: Bike bottles, Bike nutrition, Race gels, Small bottle of water to rinse your feet, what you trained on, never left on the bike overnight.

Run

Running shoes. Fuel: Run nutrition, what you trained on and nothing you have not.

Tick it off bag by bag