Trail races in Basque Country — September 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.

Peak season for trail running

1 race 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

1

Races

21 – 32 km

Distance range

1200 – 2400 D+

Elevation range

Sep

Race months

Advanced (1)

Difficulty

Tips for running in Basque Country in september

September can bring sudden storms: always carry your windbreaker even if the sky looks clear.

The terrain starts to have fallen leaves hiding rocks and roots: increase focus on descents.

It is an ideal month for ultras: take advantage of the thermal conditions and remaining daylight hours.

Race map

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Scheduled races

Essential gear + sun protection

Get ready to run in the heat: sun protection and key gear

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