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100 Miles of Istria

12-Apr-2019 Umag, Istria, Croatia


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Trail Race Race Terrain
165KM / 100Miles
2 Days - 800 Runners

Alternate Distances: 105KM/65M 65KM/40M

DIFFICULTY Race Difficulty Advanced  

Entry From €40 EUR

Croatian sport clubs SRK Alba and SD Trickeri organize the 100 Miles of Istria, the ultra trail race across the Istrian peninsula.

As the director of the event, it is a great pleasure to welcome all those who wish to participate in this trail running event. In the previous edition, 560 athletes from 23 different nationalities participated, which made us very happy and proud! It is for us, without a doubt, a huge honor to organize this event on the Istrian peninsula that, beyond it's recognized touristic attributes, offers excellent conditions for practicing this sport.

The Races

Our races start in three different towns at the eastern coast and central Istria: Labin (100 miles), Lovran (105 kilometers) and Buzet (65 kilometers) and each of course finishes on the western part of the peninsula, in Umag, which is located 30 minutes from the border with Slovenia and has a wide range of hotel accommodation nearby.

100 mile race starts in Labin and leads competitors across the whole Istrian peninsula with a loop around Botonega lake leading through some pretty old towns in central Istria. This race demands good conditioning, only advisable to 'tough squad' athletes with a high endurance capacity.

The 105 kilometers is also a crossing, but with less elevation gain and loss than the 100 miles, and aims to be as straight as possible towards Umag. A race that demands a high level of preparedness, only advisable for athletes with some background experience.

65 kilometers, the shortest race, will start in Buzet and follows the 100 kilometers race route. Athletes require some specific training.

We strongly believe that this event will have all the brilliance expected and be an extra incentive to all who are here to stay a while longer or, perhaps, to return one day.

Alen Paliska, Race Director


Read the review by Jay Aldous of the 2014 edition HERE.

Photo credit: 100 Miles of Istria.


Event Organiser
Alen Paliska



Elevation: Very little change < 500 metres. Benign running terrain, not technical.

Suitable for: First ultra runners completing a marathon or doing regular long distance running in the last six months.


Elevation: Increase of up to 1000 metres

Suitable for: Runners who have completed at least one ultra distance race (or similar event) or are doing long distance running (>26 miles) regularly, with elevation shown.


Elevation: Increase of up to 1500 metres

Suitable for: Runners who have completed several ultra distances or similar events, or are doing long distance running regularly, with elevation shown.


Elevation: Increase of up to 2000 metres with some challenging climatic conditions (e.g. ice, snow, humidity or heat) and or technical terrain

Suitable for: Experienced runners who have completed at least regular ultra distances in last 12 months, or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races may be subject to evidence of recent qualifying race participation and recent medical examination certificate. Check with the race organiser regarding entry requirements.


Elevation: Increase of up to 2000 metres with very challenging climatic conditions (e.g. ice, snow, humidity, heat or at high altitude) and or technical terrain.

Suitable for: Very experienced long distance ultra runners (min 3 years’ experience) or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races is often subject to evidence of recent qualifying race participation and recent medical examination certificate. Purchase of specialist kit is often recommended for these races.

Endurance - Multi-activity

Type: An ultra distance race including at least two of the following activities such as running, swimming, cycling, kayaking, skiing and climbing. It may also include different climatic conditions (eg ice, snow, humidity, cold water, mud or heat).

Suitable for: Experienced multi-skilled athletes who have trained for the different activities included in this event. Admission to these races may be subject to receipt of a recent medical examination certificate. Check with the race organiser regarding entry requirements and any specialist equipment required such as a wetsuit, skis or a mountain bike.

Global - Virtual

Type: A virtual race which can be run at any time shown on the dates shown, on any type of terrain in any country.

Suitable for: For runners from beginners to experienced as you choose your own course and challenge based on the guidelines and options set by the virtual race organiser.

Review 100 Miles of Istria

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Comment Arrow


09:21 15-04-19

Currently sitting in Trieste airport, less than 24hrs after finishing the race, I'm finding myself eager to tell everyone about this Croatian jewel.
I ran the 'red route', 100 miles of the finest towns, mountains and views that the country has to offer. There are shorter routes 😉

So. The race.
This is one slick operation. The instructions are clear and plentiful. Even bib collection is split down to different time slots to avoid the usual chaos. There's a bus on offer to take you to the start point in Labin, and you have the opportunity to see some more of the terrific countryside.
The town of Labin is beautiful and unspoilt.. Cobbled streets and situated on top of a hill. Top tip.. Have some local currency on you to get coffee.. They don't take euro in the tiny cafe at the start 👍
Race start is downhill, always a bonus, but there are a few bottle neck points as you hit the trails. The first climb is steep. Very steep. And a definite sign of what the next 95 miles holds in store.
Having been told by the locals that rain was expected, I was pleasantly surprised at the temperate warmth, and jogged along happily.
The route is undoubtedly beautiful. Even across the trickiest terrain, you will still be in awe of your surroundings, truly unspoilt.
However. On the steepest highest climb of the route, the weather decided to play a game. Gale force winds and a foot of snow all the way up, the ground underfoot was ice and slippery, and with some snow balanced precariously over burrows and channels, it was right up there in my list of daft dangerous things I've done at night .
The aid station at the other side, was a welcome sight, even if it did resemble some kind of post apocalyptic disaster, with people in different states of breakdown littering every chair, table and bit of available floorspace.
A very lovely medic sorted out my frozen fingers, pumped me full of hot fruit tea and kicked me out to wend my merry way.
The route is climb after climb, and if you're in contemplation, make sure you have included a solid leg strengthening session in your build up.
The only negative to this race is the sadly dire last 10k, which is a hideous flat leg killer.
All in all, I'm totally glad I did this race, I can see why it's a qualifier for the Western States, and it's a beautiful and demanding course which showcases Croatia as a 'must do' for ultra trail efficianados everywhere.

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11:21 20-09-15

I ran this event in 2014. I thought this race was fantastic because it is a true testing of one's ultra abilities - the distance is perfect, the course is challenging, and the weather unpredictable! I hope to go back again!

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