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A relentless brute of a climb, this is one of the steepest paved roads in the world. Because of that, it's known as the steepest climb in professional cycling and it is often used in the Vuelta a España stage race. You're about to find out why it's earned this title. If you can get up this indoors you're a legend, if you beat Mikkeli (our "Stig") who filmed this, you deserve a pro contact. It is often used in the Vuelta a España