Ruby Road
Coronado National Forest, Nogales
If you’ve never driven down Interstate 19, which runs from Tucson to Nogales, you might not know that the distances on signs along that highway are in kilometers, rather than miles. You also might not know the highway passes some rugged and visually striking terrain. Ruby Road, which runs for 35 miles (that’s 56 kilometers) from I-19 to Arivaca, is a prime example.