IRONMAN 70.3 Switzerland, Rapperswil-Jona, Switzerland

IRONMAN 70.3 Switzerland 2027

Rapperswil-Jona, Switzerland
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6 June 2027 Triathlon 70.3 Stairway to HeavenClassicHilly

A clear Obersee swim, two hilly lakeside bike laps, and a run through Rapperswil's old town that climbs the castle steps they call the Stairway to Heaven.

Terrain
Road
Two lakeside laps through hilly countryside
Elevation
Hilly
· Two laps of real climbing
Swim
Lake
The Obersee, clear and cold
Wetsuit
Wetsuit-legal
usually 18-20°C
Region
Switzerland
Rapperswil-Jona, Switzerland
Your runway

43 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 12-week block starts later; what you do now decides how high it can climb.

R
Recover
Fix the nervous system first. Sleep, HRV, and the noise out.
A
Align
Fit the plan to your actual life, not the one you wish you had.
C
Condition
Minimum effective dose. The right sessions, done fresh.
E
Execute
Race-week protocol, pacing, contingency. Nothing new on race day.
Predict your finish time The 70.3 training plan

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.

Abraham Spring, founder of Unbroken

“The run has a set of castle steps they call the Stairway to Heaven, twice. Do some hill running off the bike before you go, your quads will thank you.”

Abraham Spring: founder, Unbroken

The race

Rapperswil has been running since 2007 and has a strong claim to being the best-loved 70.3 in Europe. The swim is in the clear Obersee. The bike is two 45km laps along the lake and up into green hilly countryside. The run goes through the old town and the fish market and up the castle steps, twice, which is where the race is won or survived.

Questions, answered

When is IRONMAN 70.3 Switzerland 2027?

IRONMAN 70.3 Switzerland takes place on 6 June 2027.

What distances can I race at IRONMAN 70.3 Switzerland?

70.3. Pick the distance that fits your training runway, not your ego: the right distance is the one you can arrive at fresh.

How hard is the course?

Road terrain, hilly profile. Two laps of real climbing

What is the swim like?

The Obersee, clear and cold. Wetsuit-legal, usually 18-20°C. Practise open water before race week, not during it.

How long do I need to train for it?

From today you have 43 weeks. A full 12-week recovery-led block fits comfortably: start it in the app and it anchors to this exact date.

How do I enter?

Entries are handled by the organiser. Use the Register button above: it goes straight to the official site.

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Photograph of Rapperswil-Jona, Switzerland: Roland zh, CC BY-SA 3.0, 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 Switzerland 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 to enter, always use the official event website.

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