Granfondo Serra D'Ossa takes place on Sun, Oct 4, 2026 in Alandroal, Portugal. The main route is 143.9 km.
- Date
- Sun, Oct 4, 2026
- Start
- Alandroal 🇵🇹
- Distance
- 143.9 km
- Climbing
- 1,800 m
- Level
- Open to all
The Granfondo Serra D'Ossa is an Alentejo Central road cycling event starting and finishing in Alandroal, featuring challenging climbs across the preserved Serra d'Ossa landscape.
Official event pageWhat this race demands
The Granfondo Serra D'Ossa demands sustained pacing and climbing endurance over a 143.9 km road route with 1800 meters of elevation gain.
Climbing volume
Accumulating 1800 meters of elevation gain across the Serra d'Ossa landscape requires repeated climbing efforts and efficient descending on a road bike.
Distance endurance
A 143.9 km distance demands a high baseline of aerobic fitness and the ability to maintain consistent power output over several hours in the saddle.
A ride of this expected duration requires consistent carbohydrate intake of 60 to 90 grams per hour to sustain energy levels and prevent late-race fatigue.
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
5:55–7:10
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 Granfondo Serra D'Ossa is 6 weeks away. This is how a coach divides that time. The first phase starts now.
01Peak3 weeks · Aug 24, 2026 – Sep 13, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
02Taper2 weeks · Sep 14, 2026 – Sep 27, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
03Race week1 week · Sep 28, 2026 – Oct 4, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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