There are
1,918 mi
from Harlingen, TX to Oakdale, CA
That's the driving distance. It would take 1 day 9 hours to go from Harlingen, Texas to Oakdale, California.
The flight distance (direct flight from Harlingen, TX to Oakdale, CA) is 1,568.43 mi.
1,918 mi = 3,086.54 kms