Top of the Rockies - Scenic and Historic Byway Top of the Rockies - Scenic and Historic Byway, Red Cliff, CO, 80461(800) 933-3901WebsiteOverviewDesignated a National Scenic Byway in 1998. Related Articles10 Colorado Motorcycle RidesColorado Scenic Byway: Colorado River HeadwatersColorado Scenic Byway: San Juan SkywayExplore 5 of Colorado’s Epic Mountain RangesColorado Scenic Byway: Gold Belt Tour & Cripple CreekColorado Scenic Byway: Highway of Legends