The Millars UCI Gran Fondo World Series takes place on Sun, Mar 14, 2027 in Castellón de la Plana, Spain. The main route is 157 km.
- Date
- Sun, Mar 14, 2027
- Start
- Castellón de la Plana 🇪🇸
- Distance
- 157 km
- Climbing
- 2,200 m
- Level
- Open to all
The Millars Gran Fondo is an international cycling event held in Castellón, Spain, taking riders through the Sierra de Espadán natural park on a challenging mountainous course.
Official event pageWhat this race demands
The Millars UCI Gran Fondo World Series demands sustained climbing capacity and strong pacing control across 157 kilometers and 2,200 meters of elevation in the Sierra de Espadán natural park.
Climbing volume
Accumulating 2,200 meters of climbing over a 157-kilometer route requires repeated efforts on mountainous terrain and efficient management of energy reserves on longer ascents.
Aerobic endurance
Completing a 157-kilometer international gran fondo demands high aerobic capacity and the ability to sustain consistent power output for several hours in the saddle.
Terrain versatility
Navigating the mountainous roads of the Sierra de Espadán calls for technical descending skills and the ability to maintain momentum across changing road profiles.
A target intake of 60 to 90 grams of carbohydrates per hour is recommended to sustain energy levels across the multi-hour duration of the event.
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
6:40–8:00
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 The Millars UCI Gran Fondo World Series is 29 weeks away. This is how a coach divides that time. The first phase starts now.
01Base17 weeks · Aug 24, 2026 – Dec 20, 2026
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Dec 21, 2026 – Jan 31, 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 · Feb 1, 2027 – Feb 21, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Feb 22, 2027 – Mar 7, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Mar 8, 2027 – Mar 14, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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