Mulholland Drive is Los Angeles's great contradiction: a 21-mile ridge road above one of the most congested cities on earth that offers, on a clear morning, 40-mile views from the Pacific to the San Gabriel Mountains and absolute solitude above the canyon fog. The stretch from Laurel Canyon to Kanan Dume is the famous sportbike corridor — tight, technical, demanding second- and third-gear canyon carving above Beverly Hills. It's not the safest road on this list, but it's the most alive.
Clone it to your planner, customize dates and stops, then ride. All free.