Whitewater Rafting Trips and Stand-up Paddle Board (SUP) Rentals, based in Aspen, CO, and in Twin Lakes, Co with expeditions on Arkansas, Roaring Fork and Colorado Rivers. Our guides have been rafting the Roaring Fork, Arkansas and Colorado River for more than 25 years, you can feel confident that your group is in good hands. These fun, & scenic whitewater trips near Aspen offer options for all adventurers.