Let the digital trainer help you!

This calculator is powered by Racefox and is based on past results data from Racefox' official partners Vasaloppet, Skiforeningen, Birkenbeiner, Marcialonga and Red Bull Nordenskiöldsloppet. In addition to this Racefox has added insights generated from 200,000 km of training data in our database.

Racefox Birken is a digital skiing coach that provides technique advice in real time and personalized training plans tied to your goals.

Always taking Birken races into account.

This is what you get:

Improved skiing technique
Personalized training plan for Birken
Motivation to prepare properly


Racefox is sprung from research at KTH Royal Institute of Technology and Swedish Institute of Computer Science. Racefox offers a digital skiing coach that analyzes your movements and provides personalized feedback in real time.