The Top of the Rockies National Scenic Byway is a National Scenic Byway and Colorado Scenic and Historic Byway located in the high Rocky Mountains of Eagle, Lake, Pitkin, Summit counties, Colorado, United States. The 115-mile (185 km) byway showcases the two highest peaks of the Rocky Mountains: Mount Elbert at elevation 14,440 feet (4,401.2 m) and Mount Massive at elevation 14,428 feet (4,398 m). The byway connects with the Collegiate Peaks Scenic Byway at the junction of Colorado State Highway 82 and U.S. Highway 24.