Interstate Highway 80 Our 2nd stop on our 2019 Road trip was Elko, Nevada leaving Grass Valley, California on Interstate Highway 80 thru Donner Mountain, Truckee and Reno. Reno to Elko is all desert, 100-degree weather but a well-groomed 4-lane flat highway with a speed limit of 75-80 mph. This freeway is a major route…