There are
1,931 mi
from Harlingen, TX to Manteca, CA
That's the driving distance. It would take 1 day 9 hours to go from Harlingen, Texas to Manteca, California.
The flight distance (direct flight from Harlingen, TX to Manteca, CA) is 1,587.73 mi.
1,931 mi = 3,108.13 kms