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Istria 100 by UTMB®️
UltraCroatiaIstria County

Istria 100 by UTMB®️2027

01.04 – 04.04.2027Labin (Croatia)Dates to be confirmedRegistration not yet open
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Pacing, fueling and crew sheet for the course you pick

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5 courses · 21.5–168 km · up to 6’800 m D+

5 courses

  1. 21.5km

    157 m D+

    415 m D-

    avg 1%

    21K

    04.04.

    UTMB Index 20K1
    GPX

  2. 42km

    1’000 m D+

    1’120 m D-

    avg 2%

    42K

    03.04.

    UTMB Index 50K2
    GPX

  3. 69.6km

    2’400 m D+

    2’363 m D-

    avg 3%

    69K

    03.04.

    UTMB Index 50K2
    GPX

  4. 111km

    4’200 m D+

    4’103 m D-

    avg 4%

    110K

    03.04.

    UTMB Index 100K3
    GPX

  5. 168km

    6’800 m D+

    6’943 m D-

    avg 4%

    168K

    02.04.

    UTMB Index 100M4
    GPX

Course analysis

168 km6’800 m D+

236effort kmⓘ168 km on the map · feels like 236 km
D+
6’800 m
D−
6’943 m
Max alt.
1’386 m
Steepest
21%

Segments

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Elevation profile: 168K

2 m — 1’386 m

Feels like these

Race plan

Plan your race from start to finish.

Pacing, aid stations and fueling timed to your effort on Istria 100 by UTMB®️, in one roadbook.

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The race

In 5 distances, 100 miles, 110k, 69k, 42k and 21k, courses combine every aspect of Istria: difficult and technical terrain, little bit of coasteering, old medieval towns, deep forests, city centres, muddy wallies, streams and brooks, canyons and many beautiful panoramas.

Where to stay

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