ISTRIA 100 by UTMB

ISTRIA 100 by UTMB is a prestigious trail running race organised by UTMB World Series that winds through Istria's rugged, forested landscape – from Buzet to the sea and back, through vineyard and olive grove slopes and breathtaking viewpoints. The race offers multiple distances: from a 170 km ultra race to shorter formats for a wider audience. ISTRIA 100 is part of the global UTMB World Series – the prestigious race network that culminates in the Mont Blanc ultramarathon. Registration opens years in advance due to exceptionally high demand.