There are
2,004 mi
from Harlingen, TX to Roseville, CA
That's the driving distance. It would take 1 day 11 hours to go from Harlingen, Texas to Roseville, California.
The flight distance (direct flight from Harlingen, TX to Roseville, CA) is 1,618.58 mi.
2,004 mi = 3,225.63 kms