Visitors to Colorado Adventure Center explore much of its terrain suspended above the pine trees—specifically, hanging from five ziplines that span more than half a mile and reach heights of up to 65 feet. Harnessed into a secure single-pulley system, riders glide over Clear Creek as it glimmers in the sunlight or, at nighttime, in the bright beams of their headlamps—which can also be used to spot teenage woodpeckers vandalizing trees with lovers' initials.
Colorado's waters are also the setting for rafting and kayaking expeditions, during which guides lead paddlers down the rapids of the Arkansas and Colorado Rivers during outings and spring break trips. On solid ground, adventurers hit the trails of the Vail Pass and Glenwood Canyon on scenic biking trips, pedaling along paths lined with trees and rivers with options for bipeds of all skill levels. During spring months, zipliners can soar through newly blooming trees and flowers for a scenic treetop adventure.