Name: Istria 100 by UTMB® 2025
Start: 2025-04-11
End: 2025-04-13
Location: Umag

Find here the calendar of races in Croatia, a country known for its iconic red and white checkered flag. From&nbsp;<a href="https://en.wikipedia.org/wiki/Zagreb" rel="noopener noreferrer" target="_blank">Zagreb</a>,&nbsp;<a href="kavval://cities/1ed61034-f95d-439e-b181-fc7c47e5d79c" rel="noopener noreferrer" target="_blank">Split</a>, the Istria Peninsula&nbsp;to Korčula Island, the&nbsp;courses and distances in the country&nbsp;are sure to satisfy your wildest cravings 🤪! Whether you're into&nbsp;<a href="kavval://pages/19c6236d-b5b7-431a-87ba-e50b74dcd383" rel="noopener noreferrer" target="_blank">trail running</a>,&nbsp;<a href="kavval://pages/5b49242e-6288-4e30-8649-74eb1ab8563f" rel="noopener noreferrer" target="_blank">walking</a>,&nbsp;<a href="kavval://pages/baaef010-e9a4-4bab-9564-803d2d9d4f29" rel="noopener noreferrer" target="_blank">half marathon</a>&nbsp;or&nbsp;<a href="kavval://pages/390ac20f-6103-4b2e-930e-b570ed852fb1" rel="noopener noreferrer" target="_blank">marathon</a>, embark on an adventure to discover the treasures of the homeland of <a href="https://en.wikipedia.org/wiki/Blanka_Vla%C5%A1i%C4%87" rel="noopener noreferrer" target="_blank">Blanka Vlašić</a>.

Croatia

Race Calendar in Croatia

Running in Croatia

Upcoming Races in Croatia

If you can't find what you're looking for in Croatia, you might want to check elsewhere 🤷‍♀️

Where to Run in Croatia

Practical information and race calendar (walking, road, trail) in Croatia

The Sea of Thousand Islands

Istria

Dacia

Istria 100 by UTMB®

Find the shoe that fits you

Add to your favourites to be informed of new dates, of the opening of bib sales, etc:

Give us your email address to receive information about new dates, openings of bib sales, etc:

Interested in this race?

Already have an account?

Don't yet have an account?

We have just sent you an email with the information to re-set your password.

Check your inbox

Don't worry, it even happens to the best. Type in your email address and you'll receive the process to set a new password in no time.

Forgotten your password?

Log in

Create an account

Or take a shortcut and log in via

The new generation platform that allows all runners, whatever their level, to (re)discover the French territory and heritage, by finding the races that suit them.

This could also be of interest to you

Per type of race

The most sought after races

Places

Find your race with its name, place, theme...

Most popular

Races

Per theme

Hi there! We would like to use cookies to understand where our Finishers come from and how they use the website. Do you agree? <a>Click here to find out more</a>

2 or 3 cookies to refuel?

By ticking this box, you increase the odds of seeing a Finishers ad on the Internet... rather than an ad on the next international competition of Aquaponey. Which do you prefer?

They enable us to understand how our Finishers made it to our website and to analyze usage numbers. Very convenient to find out what we need to work on!

Analytics cookies

They mostly aim at improving your browsing experience and our website's security.

Basic cookies

We use cookies to mesure the audience, nurture our relationship with you and send you both quality content and ads, once in a while. You can tick the ones you agree to keep.

Usage of cookies

You can read our <a>confidentiality policy</a> to find out more.

More information

Cookies preferences

Haven't you subscribed to the Finishers newsletter yet? 🙀

Let's make sure you no longer miss out on the latest news.

Want to get more Finishers news?

If you confirm, your list will be permanently deleted.

Create a list

Update the list

Add a list

Page not found

Add the races you like to your favourites and create your race calendar

<0>Ouch,</0> you don't have any favourites yet!

Find your next challenge in our <0>search engine</0>

Have you never booked a bib with Finishers?

Beware, this will only change your contact email, not the email address you use to login.

If you haven't done so already, don't forget to update your profile so we can make sure we give you the best experience 🎨

It seems that what brought you here no longer exists (expired link). Try again if need be.

Oops

We couldn't change your password, could you try again?

The link that brought you here has expired. Try again if need be.

The link that brought you here is incorrect or has already been used. Try again if need be.

You can now login with your new password.

Done!

Reset my password

Blog

Anonymous runners, athletes or celebrities, from around the corner or from the other end of the earth: discover the stories that make running a fascinating sport...

Finishers' news

If you haven't found what you're looking for in the FAQ section of an event or have any other questions, feel free to send us your request, and we will get back to you as soon as possible:

Contact Form

An email is missing on your Finishers account <0>Add a new address</0>

Your contact email associated with your Finishers account <0>Add a new address</0>

Organizer links:

Organizer social networks

Don't hesitate to give us a call and ask us your question! We're here to help.

Call us at

Contact

Destinations

All destinations

Types of races

All types of races

Wanna join?

The event in a few words

Frequently asked questions (FAQ)

The devil's in the detail

A distance for every taste

Focus

The distance you'll all agree on

A few more words

Kids

Races for children / juniors 👶

More info on this race

All the information about the race and registration process

More races await you

Calendar of races

Will you pick short or long distance?

Upcoming races

Coming soon

More cities are waiting for you

More countries are waiting for you

More counties are waiting for you

Other disciplines are waiting for you

Other distances are waiting for you

Other dates are waiting for you

Territories and Natural Areas

Other regions are waiting for you

More themes are waiting for you

Logistics and calendar of the races

These nice race spots should get your attention

Near your place

Our favourites

The races you cannot afford to miss in France and abroad

Races abroad

Book your bib right now

Breaking news

Finishers Blog

With Finishers, travel, explore new areas and run through your passions!

Finishers is everywhere!

Finishers enables you to travel and run in the regions, counties and cities that are the beauty of our country. Explore the best places to run!

Destination highlights

Finishers off-road

No matter the sport, you'll find something to please you!

Identify the races corresponding to your desires thanks to more than 50 filters and search themes and let yourself be seduced by their story!

Put your races forth and increase your visibility amongst our community of runners!

Do you organize races?

Finishers is the most exhaustive and updated race calendar. Find your next race and book your bib in a couple of seconds! 10k, half-marathon, marathon, trails, ultra trails, urban trails... You're on!

Calendar of races: trails, half marathons, marathons, walks...

Trending now

Find the shoe to fit your foot!

Let us inspire you with our race themes to find the one that will match your cravings.

Istria 100 by UTMB® 2025

A distance for every taste

168.6 kmTOP

110 km

69.2 km

42.1 km

21.4 km

168K

110K

69K

42K

21K

More races await you