All races
Cycling

Gran Fondo Portorose

Gran Fondo Portorose takes place on Sun, Feb 28, 2027 in Portorož, Slovenia. The main route is 135 km.

Date
Sun, Feb 28, 2027
Start
Portorož 🇸🇮
Distance
135 km
Level
Open to all
Add race day to your calendar

Your 20-week plan to Gran Fondo Portorose

The Base phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.

Build my plan

Free to start · No credit card

Gran Fondo Portorose is a season-opening cycling event connecting Slovenia and Croatia, with four route options of 42, 56, 85 and 135 km.

What would it take you?

Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.

Estimated finish

4:10–5:05

Peak-week training

6–8 h/week

A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.

IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal

Your road to race day

Race day at Gran Fondo Portorose is 20 weeks away. This is how a coach divides that time. The first phase starts now.

  1. 01Base8 weeks · Oct 12, 2026 – Dec 6, 2026

    Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.

  2. 02Build6 weeks · Dec 7, 2026 – Jan 17, 2027

    Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.

  3. 03Peak3 weeks · Jan 18, 2027 – Feb 7, 2027

    The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.

  4. 04Taper2 weeks · Feb 8, 2027 – Feb 21, 2027

    Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.

  5. 05Race week1 week · Feb 22, 2027 – Feb 28, 2027

    Openers, rest and logistics. The work is done; the job now is arriving fresh.

Get this plan built around your own fitness

Frequently asked questions

When is Gran Fondo Portorose?

Gran Fondo Portorose takes place on Sun, Feb 28, 2027 in Portorož, Slovenia.

How long is Gran Fondo Portorose?

The main route is 135 km.

Who is Gran Fondo Portorose for?

Gran Fondo Portorose is open to all participants.

Similar races

Organising this race?