![](https://www.lasterketak.eus/wp-content/uploads/2018/09/hiru-haundiak.png)
HIRU HAUNDIAK 100 Km + 5126 m
Basque Country, three provinces, three mountains.
Probably the oldest ultratrail in Europe.
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HIRU HAUNDIAK 100 Km + 5126 m
Basque Country, three provinces, three mountains.
Probably the oldest ultratrail in Europe.