WhereAZ.com

- The Mount Lemmon Scenic Byway (also known as the Catalina Highway, Mount Lemmon Highway, or General Hitchcock Highway) is a 27-mile road that connects Tucson to the top of Mount Lemmon and the Summerhaven village on the Santa Catalina Mountains -  One of the most scenic highways in Arizona ... and the US, for that matter! - It is the only paved road that leads to the upper reaches of the Santa Catalina Mountains - The speed limit is 35 mph or less most of the way up the mountain, due to the curvy roadways and quick rise in elevation - Driving up to Mount Lemmon can take around 1.5 to 2 hours, depending on factors such as traffic, road conditions, and how many stops made on the way ... some really great views! -  Ascends to 9,000+ feet and offers many scenic turnouts along the way Map Also, see: Windy Point Vista