Adrenaline junkies can get their fix negotiating snow-capped peaks, rushing rivers and pounding surf. Rafting, rock climbing, mountain biking, hang-gliding, sandboarding and zip-lining: there are hundreds of ways to get your heart racing.
White-water rafting The heart-thumping rivers – from turquoise to crystalline – that draw rafters and kayakers to the Chilean south.
Mountain biking The World's Most Dangerous Road: the name says it all. This 64km mountain-bike trip outside La Paz takes in perilous descents. Make sure your brakes (and travel insurance!) are top notch.
Hang-gliding Sail high above the forest-covered hills of Rio to a beachside landing on a fantastic tandem flight.
Sandboarding Take a wild ride down 150m-high sand dunes just outside a desert oasis town in northern Chile.
Mountain climbing Strap on your crampons and make your way up 5897m Volcan Cotopaxi, one of Ecuador's most popular climbs.