There are
3,078 mi
from Somerville, MA to Lathrop, CA
That's the driving distance. It would take 2 days 6 hours to go from Somerville, Massachusetts to Lathrop, California.
The flight distance (direct flight from Somerville, MA to Lathrop, CA) is 2,631.83 mi.
3,078 mi = 4.83 kms