Ultramarathon

Istria 100 Mile

Istria 100 Mile crosses 168 kilometres from Labin to Umag through mountains, forests and medieval towns, with 6,800 metres of climbing in early spring.

Next raceFriday, April 2, 2027
RegistrationRegistration open
Distance categoryUltramarathon
LocationLabin, Croatia
Get alertsLast checked August 14, 2026

Quick facts

  • 168 kilometres with 6,800 metres of gain
  • Labin-to-Umag point-to-point course
  • Forty-five-hour maximum race time
  • Climbs Učka and passes Buzet and the inland medieval towns

Is registration open for the 2027 Istria 100 Mile?

Registration for the 2027 Istria 100 Mile is open.

About the Istria 100 Mile

The Istria 168K is the 100-mile-category race at Istria by UTMB, with a separately announced 2027 start and registration. Its route spans the peninsula from east to west.

Course

The 168-kilometre point-to-point route climbs Učka, passes Buzet and medieval inland towns, and finishes in Umag. Technical rock and about 6,800 metres of gain drive difficulty.

Race-day weather

Early April may bring mild coastal air, cold mountain rain, wind or mud. The 45-hour window exposes runners to two nights and large changes across the peninsula.

Past Istria 100 Mile dates and results

YearDateStatusResults
2027Friday, April 2, 2027Upcoming

Istria 100 Mile FAQ

When is the Istria 100 Mile?

The 2027 Istria 100 Mile is on Friday, April 2, 2027.

Is registration open for the 2027 Istria 100 Mile?

Registration for the 2027 Istria 100 Mile is open. View the official registration details at istria.utmb.world.

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Send us confirmed dates, registration links, results, live tracking, or course changes. Include the source link so runners can reach the right information.

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