For a bucket-list epic, it’s hard to beat a 10-day trip that climbs 6,000 feet and drops 36,000 along the spine of the Andes. H&I Adventures’ Taming the Dragon itinerary starts with a 4,265-foot singletrack descent from the mouth of Pululagua volcano. Next up: a ride around 19,347-foot Cotopaxi, one of the world’s highest active volcanoes. The trip culminates in a 7,545-foot descent on the Mamarumi trail, an old bootlegging path. June 29–July 8 or November 30–December 9; $2,736 per person all-inclusive.