Find your race Upcoming Find a Qualifier

Search Dashboard Saved Races Calendar

Helping the trail running community discover, plan for, and thrive at the world's best trail races.

Find Races

Search all trail races
Explore collections
Race series
Race qualifiers
Trail running glossary

Races by Location

Colorado trail races
California trail races
Utah trail races
Arizona trail races
Washington trail races
All US trail races

Lottery Odds

Western States 100
Hardrock 100
High Lonesome 100
UTMB
All calculators

Company

About
Roadmap
Terms of service
Privacy policy

Feedback

Send Feedback
Feature Requests
Report a Bug

© 2026 Trailrace.co. All rights reserved.

Built on bad decisions in Boulder, CO.

Istria 100

5 Race EventsHalf Marathon, 50K, 100 Mile, Marathon, 100K

UTMB

Labin, Croatia

Course map for Istria 100 168K

Qualifier Req

Istria 100 168K

Apr 2, 2027

100 MileCrew

Course map for Istria 110K

Qualifier Req

Istria 110K

Apr 3, 2027

100KCrew

Course map for Istria 21K

Qualifier Req

Istria 21K

Apr 4, 2027

Half MarathonCrew

Course map for Istria 42K

Qualifier Req

Istria 42K

Apr 3, 2027

MarathonCrew

Course map for Istria 69K

Qualifier Req

Istria 69K

Apr 3, 2027

50KCrew