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Race IntelligenceKlagenfurt, Austria

IRONMAN Austria-Klagenfurt

Know your day before you race it.

Enter four numbers you already train with. You get a likely finish range, target paces and watts, and how I would race this course.

Race day
13 June 2027
Swim
3.8 km
Bike
180.2 km
Run
42.2 km

Published route evidence. Final 2027 route pending. Checked 15 Sept 2026.

Official course routeThe real GPS route for each discipline with official GPX data available, drawn in one shared coordinate space.

01 Race Card

Build my Race Card

Your first range uses conservative assumptions. Add optional evidence to make it more specific. It is calculated in your browser and saved only on this device.

Your numbers
Distance unit
Weight unit
You and this race
Sharpen your range with more detailOptional. Recent swim, bike and run results, equipment and transitions.

Add only the evidence you have. Every control changes a discipline range, its uncertainty, or an execution-risk explanation.

Swim evidence

Replaces the broad pool-to-open-water assumption.

Bike and equipment

These replace broad mass, aerodynamics, tyre, and power-to-speed assumptions.

Run evidence

A recent effort and honest durability/acclimation answers refine the post-bike run.

Race execution

Transition proficiency changes the T1/T2 range and how wet conditions are treated.

02 The course

What Austria-Klagenfurt actually gives you

You swim one loop in Lake Wörthersee, ride two hilly loops through the Carinthian hills with genuine climbs and descents, then run four mostly flat loops around the lake and through Klagenfurt. The run looks forgiving; the day is decided by how patiently you ride the bike.

Show distances in

Swim

3.8 km

Lake Loop

Layout
1 loop
Setting
Lake Wörthersee

A single lake loop in clear Wörthersee water gives a calm, controlled start.

Source: 2026 current route

Bike

180.2 km

Hilly Roads With Steep Climbs and Descents

Layout
2 loops
Setting
Carinthian hills around Lake Wörthersee

Steep Carinthian climbs and technical descents are the day's decisive terrain and repeat across two loops.

Source: 2026 current route

Run

42.2 km

Flat Lakeside and City Course

Layout
4 loops
Setting
Klagenfurt and Lake Wörthersee

A flat four-loop course around the lake and through Klagenfurt rewards a bike ridden with restraint.

Source: 2026 current route
Where these course facts come from

These facts come from the organiser’s latest published material: swim, 2026 current route; bike, 2026 current route; run, 2026 current route. They describe the character of the course. They do not confirm the final 2027 route.

03 Race plan

How I’d want you to race it

One job for each part of this course. The distance markers tell you when the job changes. The course tells you why.

Swim

Settle in Wörthersee

  1. 0–300 m

    The start

    Settle into the lake

    Clear lake water and a single loop reward an early rhythm rather than a hard opening.

    • Seed honestly
    • Settle by 300 m

Bike

Cap every climb

  1. 0 km–90 km

    Loop one

    Cap the Carinthian climbs

    The steep climbs and descents are real. Ride them to a ceiling because every hard minute returns on lap two and the run.

    • Cap power uphill
    • Brake before the corners

  2. 90 km–180.2 km

    Loop two

    Match the first loop

    Repeat the course without banking time. Finish the planned nutrition before the flat run.

    • Match effort, not speed
    • Finish fuel before T2

Run

Let the flat course come to you

  1. 0 km–10.55 km

    First loop

    Protect the easy run

    The flat course can feel free after the hills. Keep the first loop deliberately controlled.

    • Shorten stride off T2
    • Take the first aid station

  2. 10.55 km–42.2 km

    Remaining loops

    Spend what the bike left

    Use the repeated lake and city sections as honest checks, progressing only when the legs stay composed.

    • Check form each lap
    • Choose the last move late

04 Race week

What I would keep an eye on

There is no useful 2027 forecast this far out. For now, past race dates give us a point of reference. Closer to the race, the forecast will tell us whether the plan needs changing.

Forecast statusToo early for a forecast

A race-day forecast is not meaningful yet; check back closer to the event.

Temperature
14.8–26.9°CDew point centred on 13.9°C
Wind and gusts
4.5 km/hGusts up to 27.0 km/hPrevailing direction S
Rain likelihood
Up to 85%Wet-surface uncertainty retained

Historical baseline, 2019–2025 · Open-Meteo historical archive · Updated 2026-09-15.Historical comparison only. This is not a forecast for 2027.

05 Method

What goes into your range

Your CSS, FTP, weight and run threshold create the first range. Open-water, bike, run and execution evidence can replace broad assumptions. Course data and the historical conditions baseline shape every simulation.

  1. Your numbersCSS · FTP · weight · run threshold
  2. This raceDistance · water type · elevation · exposure
  3. Your Race CardFinish and discipline ranges, with target paces and watts

Confidence is built from four inputs

Athlete evidence
Builds with recent open-water, bike and run efforts
Bike setup
Builds with equipment, mass, aero and tyre detail
Course evidence
Partial while the 2027 route is unconfirmed
Race-week conditions
Historical baseline until a forecast is useful
How the model works

It starts with the targets in your Race Card, then samples the parts of a full distance that vary: open-water pace, transitions, bike speed at the planned power, and the drop in run performance after the swim and bike. Repeating that calculation produces a likely range rather than a single heroic number.

The current time calculation uses this race’s published distances, or standard full distance distances where none are published, with the available course headings, elevation and exposure evidence. Weather scenarios vary temperature, dew point, wind, gusts, rain and water conditions together. Unknown route detail stays visible as uncertainty rather than false precision.

It is not predicting your exact finishing time, placing, or race-day weather. It answers a narrower question: given the plan and the information we have, what range of day is plausible, and where is the uncertainty coming from?

Confidence is not a permanent “low”. It is recalculated across four separate inputs:

  • Your evidence: consistent inputs and recent race-like swim, bike, and run results.
  • Bike setup: measured or specified aerodynamics rather than a broad prior.
  • The course: verified distance and route character, including elevation and technical sections.
  • The conditions: a current forecast is more useful than a historical comparison.

It starts low when those inputs are broad. It can become moderate or high as the evidence improves. A narrower range means better information, not a guarantee.

06 Next steps

If Austria-Klagenfurt is your race

Your range is built on today’s numbers. The months of training before race day decide what those numbers become.

The work from here.

Self-guided routeFull-distance training plansPlans for durable climbing and controlled running.See the plans Personalised routeWork with me on the whole buildCoaching for the complete race build.See coaching

Further reading

ArticleFull-distance race strategy: calm execution beats chaosThe pacing discipline a hilly bike and flat run demand.ArticleFix the first ten minutes off the bikeUseful before a four-loop run.

Evidence

Sources and verification

Course status: Partially verified. The organiser’s descriptions and latest published route profiles are in use. The final 2027 route is not yet confirmed. Last checked 2026-09-15.