IRONMAN 70.3 Tallinn 2027
A clear freshwater swim in Lake Raku, a flat bike through the countryside, and a fast two-lap run beside Tallinn Bay.
2027 edition completed
This record covers the 8 August 2027 edition of IRONMAN 70.3 Tallinn in Tallinn, Estonia, with a 1.9 km swim, a 90 km bike and a 21.1 km run. This date belongs to a completed edition. The course record remains available. Course descriptions and coaching notes are archived context for this edition. Check the organiser for a future edition once its date and entry details are published.
42 weeks to race day: base season
Plenty of runway. This far out, the win is a boring, consistent base rhythm: aerobic volume, strength, technique. The structured block starts closer in; what you do now decides how high it can climb.
Building for this one? 70.3 training plan covers the sessions, the weekly shape and how the block is paced. The R.A.C.E. Framework explains why it is built that way.
Make today's training serve IRONMAN 70.3 Tallinn.
Use the app to adapt the next session around readiness while keeping this race in view. UK athletes who want individual review can choose online coaching instead.
Build my complete road
Three honest inputs. Your first answer appears here; no email wall and no generic plan.
Course risk: The course rewards steady output; the main risk is spending the bike fitness you need for the run.
Build my complete road.
Commit to the date and the work gets a shape: your countdown starts, the emails arrive in step with your build, and the app anchors a recovery-led block so the final week lands exactly on race day.
One confirmation email, then the road begins. Registering for the race itself stays with the organiser.
“Lake Raku removes the old sea-course uncertainty, but athletes should still prepare for cool open water and verify the race-day wetsuit ruling.”
The race
The evidence, translated into a decision.
This is not another difficulty score. It connects verified course evidence to the athlete constraints you have already shared with Unbroken.
Choose this race if you value a controlled swim setting and repeatable pacing.
Think twice if you need every course detail to be complete today; the known gaps below remain deliberately unscored.
Prioritise steady race-position power, repeatable fuelling and an intentionally restrained opening run pace.
The course
Interactive swim route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
A single loop of Lake Raku: clear water, a sandy bed and an average depth of 6.4m. Deep, clean and calm, which is about as straightforward as an open water swim gets.
Interactive bike route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
Out of the city to the southern villages, back through Tutermaa towards Tallinn and the Unibet Arena, then out into the countryside again. The official page does not state a lap count.
Interactive run route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
Two laps with Tallinn Bay alongside, finishing in front of the Unibet Arena, and eight aid stations across the course. Described as one of the fastest run courses in the world, which is a claim your pacing plan should take seriously in both directions.
Not yet confirmed for this edition: bike lap count, bike elevation gain, cut-off times, water temperature. We publish these only once they are on the official course page, so check there before you pace off anything here.
Course details verified against the official IRONMAN 70.3 Tallinn course page on 13 August 2026. Courses change; the official page is always the last word.
What is measured, observed and still unknown
Questions, answered
When is IRONMAN 70.3 Tallinn 2027?
What distances can I race at IRONMAN 70.3 Tallinn?
How hard is the course?
What is the swim like?
How long do I need to train for it?
How do I enter?
Read before you race
Half Ironman Recovery Time: A Practical Return
How Much Harder Is a Full IRONMAN Than a 70.3?
IRONMAN 70.3 Tallinn Training Guide
More races like this
Photograph of Tallinn, Estonia: William John Gauthier from Denmark, CC BY-SA 2.0, via Wikimedia Commons. Not official race photography.
This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by IRONMAN 70.3 Tallinn or its organiser. Details are based on publicly available information; names are used descriptively to identify the event. For accurate, up-to-date information and entry, always use the official event website.