This is a unique race, in which you cross two natural parks (Aralar and Aizkorri-Aratz) and no less than 30 towns. One more year, there is the chance to take part in the three classic races: ehunmilak Ultra-Trail® (The hundred miles, with 171km / D+ 10.500m), goierriko 2 haundiak trail (The two great peaks of Goierri, with 90km / D+ 5.500m) and marimurumendi marathon (42km / D+ 2.300m).
Number of participants in the 3 races (total of 1450 participants).
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