Triathlon

Spiezathlon

Spiezathlon takes place on Sat, Jun 19, 2027 in Spiez, Switzerland. The main route is 51.5 km.

The Spiezathlon is a traditional triathlon and duathlon event held annually in and around the scenic bay of Spiez.

What this race demands

The Spiezathlon demands a balanced multi-sport endurance effort across swimming, cycling, and running over a standard 51.5 km total distance.

Multi-sport transition

Athletes must manage pacing and physiological shifts across three distinct disciplines within the 51.5 km total distance.

Aerobic endurance

The standard triathlon distance requires sustained cardiovascular output over several hours without extended recovery periods.

Target 60 to 90 grams of carbohydrates per hour to sustain output across the multi-hour duration of a standard distance triathlon.

Race day at Spiezathlon is 43 weeks away. This is how a coach divides that time. The first phase starts now.

01Base31 weeks · Aug 23, 2026 – Mar 27, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Mar 28, 2027 – May 8, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · May 9, 2027 – May 29, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · May 30, 2027 – Jun 12, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Jun 13, 2027 – Jun 19, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.

Organising this race?