Once again this year, Valsir will sponsor the Mountain Running World Championships, an amazing show that will bring together the world's strongest runners to compete for the title on rough trails and untouched slopes.

The races will start on 3 May 2025 in Romania: this year the championship calendar introduces new stages and has the potential to take the competition to the highest levels ever!

Here are all the stages: https://www.wmra.info/calendar/2025-major-events/