Gran Fondo Roller Coaster takes place on Sun, Aug 29, 2027 in Zagreb, Croatia. The main route is 90 km.
- Date
- Sun, Aug 29, 2027
- Start
- Zagreb 🇭🇷
- Distance
- 90 km
- Climbing
- 1,000 m
- Level
- Open to all
Your 44-week plan to Gran Fondo Roller Coaster
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 planFree to start · No credit card
Gran Fondo Roller Coaster is an international road-cycling race starting and finishing in Zagreb, with a challenging 90 km route and more than 1,000 m of climbing.
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
3:25–4:10
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 Roller Coaster is 44 weeks away. This is how a coach divides that time. The first phase starts now.
01Base32 weeks · Oct 26, 2026 – Jun 6, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Jun 7, 2027 – Jul 18, 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 · Jul 19, 2027 – Aug 8, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Aug 9, 2027 – Aug 22, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Aug 23, 2027 – Aug 29, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Gran Fondo Roller Coaster?
Gran Fondo Roller Coaster takes place on Sun, Aug 29, 2027 in Zagreb, Croatia.
How long is Gran Fondo Roller Coaster?
The main route is 90 km.
How much climbing does Gran Fondo Roller Coaster have?
Gran Fondo Roller Coaster has 1,000 m of climbing.
Who is Gran Fondo Roller Coaster for?
Gran Fondo Roller Coaster is open to all participants.
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Organising this race?