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 168k / D+11.000m), goierriko bi haundiak trail (The two great peaks of Goierri, with 88k / D+6.000m) and marimurumendi marathon (42k / D+2.300m).
Increases the number of participants in the 3 races (total of 1450 participants).
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