Triathlon

IRONMAN Switzerland Thun

Sunday, 4 July 2027 ·Thun, Switzerland

242 days to the start

Key facts

3.8 km
Swim
180.2 km
Bike
42.2 km
Run

Distances/formats: Ironman 3.8/180/42.2

What your preparation looks like

34 weeks to go until race day — following the Summitflow methodology (polarised 80/20 training, 4-week blocks), your preparation from today breaks down like this:

Base
16 weeks
Build
8 weeks
Peak
5 weeks
Taper
3 weeks
Race
2 weeks
Base

Base building — high volume, low intensity (Z1/Z2)

Z1/Z2 85%Z3 5%Z4+ 10%
Build

Build — volume + moderate intensity (Z2/Z3)

Z1/Z2 80%Z3 5%Z4+ 15%
Peak

Peak — reduced volume, high intensity (Z4/Z5)

Z1/Z2 75%Z3 5%Z4+ 20%
Taper

Taper — much lower volume, race intensity

Z1/Z2 80%Z3 5%Z4+ 15%
Race

Race week — minimal training, focus on recovery

Z1/Z2 90%Z3 5%Z4+ 5%

Your personal plan for IRONMAN Switzerland Thun

Summitflow Pace builds you a periodised training plan that adapts to your fitness level, the time you have and your real life — week by week, all the way to race day.

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