The drive from Mammoth Lakes to Newport Beach is approximately 520 kilometers, taking you through the heart of Los Angeles to the coast of Orange County. The journey takes about 6 hours and 45 minutes, depending on traffic. A private vehicle is the most practical mode of transport for this route.
Total Distance: 520 km driving distance; 450 km straight-line air distance.
The I-405 is notoriously busy; plan your arrival for off-peak hours.
Spring and Fall for pleasant coastal weather.