Triathlon

Tønsbergdysten

Tønsbergdysten takes place on Sun, Sep 20, 2026 in Tønsberg, Norway. The main route is 51.5 km.

Tønsbergdysten is a popular triathlon event held at Ringshaugstranda featuring sprint and olympic distances.

What this race demands

Tønsbergdysten is a standard 51.5 km Olympic distance triathlon that requires balanced pacing across swim, bike, and run disciplines.

Multisport transition

Athletes must manage the physiological shift from swimming to cycling and finally to running without significant performance drop-off.

Aerobic endurance

The 51.5 km total distance requires sustained aerobic output across all three consecutive disciplines over a duration typically exceeding two hours.

Target 60 to 90 grams of carbohydrates per hour during the cycling and running segments to sustain output over the multi-hour duration.

Competitive (~4.0 W/kg, sub-40min 10K)2:05–2:20

Intermediate (~3.0 W/kg, ~48min 10K)2:25–2:50

First-timer3:00–3:45

Estimates by level, not promises. Your own number depends on your fitness on the day.

Race day at Tønsbergdysten is 4 weeks away. This is how a coach divides that time. The first phase starts now.

01Peak1 week · Aug 24, 2026 – Aug 30, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
02Taper2 weeks · Aug 31, 2026 – Sep 13, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
03Race week1 week · Sep 14, 2026 – Sep 20, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.

Organising this race?