There are
1,608 mi
from La Mesa, CA to Fremont, NE
That's the driving distance. It would take 1 day 3 hours to go from La Mesa, California to Fremont, Nebraska.
The flight distance (direct flight from La Mesa, CA to Fremont, NE) is 1,275.21 mi.
1,608 mi = 2,587.32 kms