Calle Herreria

Calle Herreria is a mostly runnable climb above Formiche Alto in Aragón. Its steepest 500 metres run at 17.3% and come almost at once, before your legs have settled. At 2.5 TEP it sits in the easier half of the catalogue. Expect 35 to 59 minutes. East-facing, so it takes the morning sun and is in shade by the afternoon.