The Best Whitewater Rafting Trips in Colorado (and Why Aspen Belongs at the Top)

From the high desert canyons of the Arkansas River to the alpine waters of the Roaring Fork, Colorado is home to some of the best whitewater in the country. For over a decade, Thunder River Adventures has been exploring these rivers — and guiding guests on one of the state’s purest, most scenic stretches near Aspen. Here’s a professional guide’s take on Colorado’s best rafting trips, and why the Roaring Fork River stands apart.