Istria 100 by UTMB®

Numerous sports and active holiday lovers will find enough reasons to come to Istria even in the winter months, but the first days of spring bring the new edition of the ultra trail race Istria 100 by UTMB.

Istria 100 by UTMB is ultra trail race taking place in Istria on a territory from Labin (168 km), Buzet (110 km & 67 km), Motovun (42 km) and Grožnjan (21 km) all the way to Umag. That is why the race is considered one of the biggest and toughest races of this kind in Croatia, gathering more than 2000 participants from over than 60 countries worldwide.

The routes pass through the hiking paths of Istria, taking runners over the mountain tops of Učka and Ćićarija, through the medieval towns of Istrian inland, and finish on the western part of the peninsula in Umag. The races combine every aspect of Istria, featuring challenging and technical terrain, coastal stretches for a bit of coasteering, scenic medieval towns, treks through deep forests, city centers, muddy trails, streams and brooks, canyons, and stunning panoramas.

The Race is part of the UTMB World Series, a collection of 35 of the world’s best trail running races. Istria 100 by UTMB was selected by the UTMB World Series to join the ranks of the elite races among the 26 000 different trail races held worldwide.

RED 168 km: the longest and most challenging race starts in Labin, 14.4.2023. at 17.00 h
BLUE 110 km: a bit shorter race starts in Buzet, 15.4.2023. at 07.00 h
GREEN 69 km: “middle” distance race starts in Buzet, 15.4.2023. at 09.00 h
YELLOW 42 km: shorter distance race for runners looking for more experience starts in Motovun, 15.4.2023. at 12.00 h
WHITE 21 km: dedicated for beginners in trail running starts in Grožnjan, 16.4.2023. at 10.00 h

Besides the 5 races, this event includes sports expo which will be held in the sports hall “Marije i Line”, 13. and 14.4.2023. The Expo is free and open to the public.
The finish line for all races is in Umag, at the main square where runners will be arriving at the finish line from Saturday morning until Sunday afternoon. The prize giving ceremony for the winners will take place on Sunday, 16.4.2023. at 13.00 h on the main city square in Umag.

Welcome to the new edition of the ultra trail race! 
» Info:

About the event:

Ultratrail race


  • Labin, Buzet, Motovun, Grožnjan, Umag


  • 13.04. - 16.04.23


  • Sportbox