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How to Train for
Istria 100 by UTMB®
Find out all you need to know about the Istria by UTMB Training Plans
When?
Friday 11th to Sunday 13th April 2025
Where?
Istria
Distance
21-169km / 13,04-105,01mi
Elevation Gain
150-6.600m
Mountain Index
7-39km / 4,34-24,23mi
About
the Race
ISTRIA 100 by UTMB started in 2013 and today it gathers more than 2500 runners from all over the world.
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.
Training
tips
To train for Ultra-Trail Snowdonia by UTMB, you’ll need a personalized training plan and to build up your weekly mileage progressively.
Runna offers running training plans for every runner and goal out there.
With Runna, your running coaching app, you get a personalized 100km training plan that:
- Structures your week and sets out all sessions for you
- Automatically adjusts your mileage and types of runs to help you perform at your best
- Incorporates deloads and strength training
- Helps you manage your recovery and nutrition
Having a plan will also help with accountability, meaning that you can focus purely on improving your running game.
Check out our personalized 100km training plans to find the one that best suits your goals.
race distances
21km
Elevation Gain: 150
Mountain Index: 7
42km
Elevation Gain: 950
Mountain Index: 23
69km
Elevation Gain: 2.200
Mountain Index: 32
110km
Elevation Gain: 3.900
Mountain Index: 32
169KM
Elevation Gain: 6.600
Mountain Index: 39
Race
FAQ's
The total distance of the Istria 100 by UTMB®️ – 100M is 169 kilometers.
Istria 100 by UTMB®️ – 100k has an elevation gain of 3900 meters.
Istria 100 by UTMB®️ – 50K starts on Saturday 12th April 2025
The maximum race time is 8 hours for the Istria 100 by UTMB®️ – 50K
The Istria 100 by UTMB®️ – 20K starts in Grožnjan – 10:00
The total distance of the Istria 100 by UTMB®️ – 100K is 110 kilometers.
Istria 100 by UTMB®️ – 50k has an elevation gain of 2200 meters.
We really want to hear from you, and are here to answer any questions you have. So feel free to write us to explore@vert.run, and one of our coaches will get back to you within 48 hours or fewer.
If you’re a monthly subscriber, yes! You can switch between training plans however you’d like. Just go to your dashboard and choose the “change or restart plan” option. This will take you to your training plan menu. Of course, we do recommend that you finish a training plan once you’ve started it (unless you find it to be way to difficult or easy), since they’re designed to build your fitness over weeks. When you leave a training plan in the middle, you’ll miss key workouts; and when you start a new plan, you’ll start it from the beginning. This is to make sure that you train safely and responsibly, and that the skills you develop are built to last. We encourage you to stick out each plan, challenge yourself in a race or other personal challenge, and then to start a new plan with fresh legs.