There are
2,002 mi
from Harlingen, TX to Novato, CA
That's the driving distance. It would take 1 day 11 hours to go from Harlingen, Texas to Novato, California.
The flight distance (direct flight from Harlingen, TX to Novato, CA) is 1,664.02 mi.
2,002 mi = 3,222.53 kms