IRONMAN Austria (Klagenfurt) 2027
Warm turquoise lake swimming, smooth Carinthian roads, and a shaded lakeside marathon into Klagenfurt. Widely rated the most enjoyable full distance in Europe.
2027 edition completed
This record covers the 13 June 2027 edition of IRONMAN Austria (Klagenfurt) in Klagenfurt am Worthersee, Austria, with a 3.8 km swim, a 180 km bike and a 42.2 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.
34 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? Ironman 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.
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.
“The nicest water you will ever race in and a course that rewards discipline. Athletes love this one because everything except one climb per lap is smooth and rideable.”
The race
The course
Interactive swim route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
Across the turquoise Wörthersee and then into the Lendkanal for the final stretch, where the banks are packed with spectators either side of you. Finishing a 3.8km swim in a canal corridor of noise is one of the best moments in the sport.
Interactive bike route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
Steep climbs and quick descents through the Carinthian landscape. Not a flat European course despite the reputation of the region, and the climbs are short and sharp rather than long and graded.
Interactive run route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
Flat and fast through the middle of Klagenfurt and along the lake. After a bike with real climbing, a flat marathon is a gift you have to have earned on the bike to collect.
Not yet confirmed for this edition: lap counts on all three legs, bike elevation gain, cut-off times, aid station spacing. 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 Austria (Klagenfurt) course page on 13 August 2026. Courses change; the official page is always the last word.
Questions, answered
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Read before you race
Half Ironman Recovery Time: A Practical Return
How to Choose Your First European IRONMAN
European IRONMAN Calendar and Race Comparison Guide
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Photograph of Klagenfurt am Worthersee, Austria: Johann Jaritz, CC BY-SA 4.0, via Wikimedia Commons. Not official race photography.
This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by IRONMAN Austria (Klagenfurt) 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.