2. Colorado River, Arizona/Utah, USA
You can take in unique perspectives of the Grand Canyon from the wild Colorado River, which runs for 226 miles (363km) through Utah and Arizona, on this hair-raising rafting trip down class IV–V rapids in the world’s deepest gorge. You can mix things up with visits to ancient Navajo ruins and side grottos, or with hikes to spectacular waterfalls. If you don’t feel up to a full-on eighteen-day belter, three days is usually the minimum to really get to grips with the river, though some companies run half-day or day excursions too. Vessels vary from motorized, oared or paddle rafts to little wooden dories, and the season lasts from May to September.
3. Magpie River, Canada
Rafting down the Magpie in eastern Québec offers the chance to see more than just stunning secluded forests, intriguing wildlife and the impressive Magpie Falls – you might also catch a glimpse of the wonders of the aurora borealis. As if that’s not enough, the rafting begins after an epic seaplane trip onto Magpie Lake. The rapids get increasingly more aggressive and difficult to navigate as the eight-day trip downriver progresses, climaxing in Grade V rapids on the last day at Magpie Falls.
4. Noce River, Italy
Easily one of the top rafting destinations in Europe, fed by the melting glaciers of the Brenta Dolomites, the Noce River churns out Grade III–V rapids throughout the summer. Astounding views of sheer cliffs and distant snowcapped summits abound, as the river thunders through the gorges of Mostizzolo and across the remote Val di Sole (Sun Valley). The navigable 28km of the river can be done in one adrenalin-pumped day.