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 The official route file is unpublished, so the lap count is unconfirmed.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.
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.
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.
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.
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.
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.
Sorted by the bag each thing goes in. Bag systems vary by event, so check your athlete guide.
What you'll wear
0 of 14 done
On you at the swim start. Nobody hands you a bag for this one.
Essentials
0 of 5 done
Extras
0 of 9 done
Morning clothes bag
0 of 22 done
White bag. Clothes for the walk to the start, and everything you want the moment you finish. Many races take this bag from you at the swim start and hand it back after the line.
Essentials
0 of 1 done
Extras
0 of 19 done
Only if it applies to you
0 of 2 done
Bike gear bag (T1)
0 of 24 done
Blue bag. Everything between the water and the bike course. At most races the bike is checked in the day before, which splits this bag in three: what goes ON THE BIKE has to be there before the bag is, what you CARRY IN goes with you on the morning because it cannot sit out overnight, and the rest is the bag itself. Each line says which.
Essentials
0 of 7 done
Extras
0 of 17 done
Run gear bag (T2)
0 of 7 done
Red bag. What you want waiting for you when the bike is racked.
Essentials
0 of 1 done
Extras
0 of 5 done
Only if it applies to you
0 of 1 done
Not in a bag
0 of 20 done
Everything that has to leave the house and belongs to no race bag. A bike that arrives is a bike you have to put back together, and nothing in that hour can be bought at eight on a Saturday night.
Essentials
0 of 4 done
Extras
0 of 13 done
Only if it applies to you
0 of 3 done
Your ticks are saved on this device. Nothing is sent anywhere, and there is no account.