A gentle run from hilltop Grožnjan to the Adriatic finish in Umag
Other trail races within 139 miles
The most accessible entry in the Istria 100 festival, the 21K starts in the hilltop arts village of Grožnjan and follows an easy, runnable path down to the seafront in Umag. With just 157 meters of gain and a 4-hour cutoff, it's designed for beginners, race volunteers, and supporters of runners in the longer events who want their own finish-line moment.
Suitable for first-timers
Labin, CroatiaApril 12, 2026
Must meet custom qualifier requirements within the qualification window
Requires UTMB Running Stones 1.
| Location | km | Elevation |
|---|---|---|
Grožnjan Start | 0.0 | 276 m |
Buje Aid Station | 6.9 | 150 m |
Umag Finish | 21.6 | 1 m |
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