From September 4 to 6, Extreme Barcelona returns to the Parc del Fòrum to once again host one of the most important urban festivals in the world, with everything necessary to live a unique experience for all audiences, fusing sport, art, music and urban culture during an unforgettable weekend with free entry. The sports program of this edition reinforces the evolution of the festival with a broader and more diverse proposal that combines international competitions, Olympic disciplines and new…