Trail races in Basque Country — May 2026
The Basque Country is the birthplace of Spanish skyrunning with the legendary Zegama-Aizkorri. Green mountains, technical trails and an Atlantic climate that challenges even the most prepared runners.
2 races scheduled
Climate in Basque Country: The Atlantic climate means frequent rain year-round, but also mountains that are always green and mild temperatures. There's no truly bad season for running, though November to February combines rain with short days. From May to September days are long and temperatures pleasant (15-25 °C), though rain can appear without warning. Running here always requires a waterproof jacket in your pack — but that mud and mist are part of the Basque character.
Race summary
2
Races
4.5 – 42 km
Distance range
550 – 2736 D+
Elevation range
May
Race months
Difficulty
Tips for running in Basque Country in may
Sun protection: the sun is already strong in May. SPF 50+ cream, visor cap and sunglasses are essential.
If your race is in high mountains, still bring thermal layers: at high altitudes temperatures can drop below 5 °C.
May has a high volume of races: plan carefully if you have multiple objectives to avoid overtraining.
Race map
Click a marker to view race details.
Scheduled races
Featured Photo: Zegama-Aizkorri Zegama-Aizkorri
Zegama
42K y KV por la Sierra de Aizkorri, la carrera de skyrunning más mítica de España
Photo: Mitxarro Bira Mitxarro Bira
Araia
27,5K y 14K por la Sierra de Altzania en el Parque Natural de Aizkorri-Aratz
Essential trail running gear
Must-have gear to prepare for your mountain races
Salomon
Salomon Speedcross 6
La zapatilla de trail más versátil de Salomon, ideal para terrenos técnicos y barro. Agarre excepcional con suela Contagrip y amortiguación EnergyCell+.
Fox 40
Fox 40 Classic
Silbato de emergencia sin pieza interna, funciona mojado y con barro. Sonido de 115 dB audible a gran distancia. El estándar en carreras de montaña.
Gore Wear
Gore Wear R7 GTX Shakedry
Chubasquero Gore-Tex Shakedry ultraligero (110 g). Impermeabilidad total sin membrana interior, altamente transpirable. El referente para corredores de montaña.
Salomon
Salomon ADV Skin 12
Chaleco de hidratación de 12 litros con sistema SensiFit. Dos soft flasks frontales de 500 ml incluidas. Bolsillos de fácil acceso y ajuste ceñido sin rebotes.
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