EstrelAçor Ultra Endurance takes place on Fri, Oct 2, 2026 in Penhas da Saúde, Portugal. The main route is 103 km.
- Date
- Fri, Oct 2, 2026
- Start
- Penhas da Saúde 🇵🇹
- Distance
- 103 km
- Climbing
- 4,162 m
- Level
- Open to all
EstrelAçor Ultra Endurance is an extreme mountain trail running event traversing the rugged terrain of Serra da Estrela and Serra do Açor in Portugal.
Official event pageWhat this race demands
EstrelAçor Ultra Endurance requires sustained mountain trail running over a 103 km distance through rugged terrain.
Extreme Distance
Covering 103 km demands exceptional aerobic capacity, pacing discipline, and resistance to muscular fatigue over many hours of continuous movement.
Mountain Terrain
Traversing the rugged mountain environment of Serra da Estrela and Serra do Açor requires strong technical trail skills and durability on varied, demanding surfaces.
Given the ultra-endurance distance and extended duration, athletes should consume 60 to 90 grams of carbohydrates per hour to maintain energy output.
Your road to race day
Race day at EstrelAçor Ultra Endurance is 6 weeks away. This is how a coach divides that time. The first phase starts now.
01Peak3 weeks · Aug 22, 2026 – Sep 11, 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 12, 2026 – Sep 25, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
03Race week1 week · Sep 26, 2026 – Oct 2, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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