Backyard Ultra

Horizontes Backyard Ultra is a part of the Backyard Ultra calendar, an American invention of Lazarus Lake that is now done in many different countries. This competition takes place in Proença-a-Nova and has a 6,706-meter circuit with 135D+ of difficulty. In order to be successful in this grueling task, one must possess the qualities of endurance, resilience, management skills, and intelligence.