Jaka Marinko
About me
Endurance athlete, Faculty of Sport student and personal trainer.
I'm Jaka Marinko, an endurance athlete, a student at the Faculty of Sport and a personal trainer who specialises in preparing athletes for endurance sports.
Sport has been part of my everyday life since I was a child. Years of racing at the top junior level gave me experience that I now combine with current sports science, to help others improve faster and more safely.
As a multiple junior national champion in ski mountaineering, cross-country skiing, roller skiing and mountain running, I've learned what it takes to reach top results.
My measured VO₂max is 80 ml/kg/min.
I'm especially proud of 5th place at Red Bull 400 Planica, where I set the fastest time among the juniors.
Today I build on that practical experience with my studies at the Faculty of Sport, going deeper into physiology, biomechanics, training methodology and sport psychology.
I believe the best results don't happen by chance. They come from careful planning, consistency and an individual approach.

Results
- Multiple junior national champion: ski mountaineering, cross-country skiing, roller skiing, mountain running
- Slovenian national team
- 2× U20 World Championships, cross-country skiing
- U20 European Championships, mountain running
- U20 World Championships, mountain running
- U20 World Championships, ski mountaineering
- VO₂max: 80 ml/kg/min
- Red Bull 400 Planica: 5th place, fastest junior
Disciplines
- Road running
- Mountain running
- Road cycling
- Mountain biking
- Cross-country skiing
- Ski mountaineering
Šmarna gora: progress measured in seconds
A climb up Šmarna gora every year, as a personal measure of how my endurance develops.
| Age | Time (min:s) |
|---|---|
| Age 12 | 15:11 |
| Age 13 | 14:48 |
| Age 14 | 14:24 |
| Age 15 | 13:47 |
| Age 16 | 13:11 |
| Age 17 | 12:42 |
| Age 18 | 12:38 |
| Age 19 | 12:33 |
Goal at 20: under 12:00

Ski mountaineering 
Cross-country skiing 
U20 World Championships, mountain running
Ready to know your numbers?
Book a test, or write to me and I'll get back to you as soon as I can.