The distance from San Diego to Mammoth Lakes is approximately 510 miles (820 km) via the fastest route, which is via CA-14 N. The estimated driving time is around 8 hours and 30 minutes, depending on traffic and road conditions.
By Plane:
There is no direct flight from San Diego International Airport (SAN) to Mammoth Yosemite Airport (MMH) in Mammoth Lakes. However, you can fly from SAN to Eastern Sierra Regional Airport (BIH) in Bishop, which is about 45 miles (72 km) from Mammoth Lakes. The flight time is about 1 hour and 10 minutes, and from there you can rent a car or take a shuttle to Mammoth Lakes.
Other Transportation:
There is no direct train or bus service between San Diego and Mammoth Lakes. You would need to take a combination of buses and trains with multiple transfers, which would make the journey much longer and more complicated.
