There are
2,013 mi
from Harlingen, TX to Petaluma, CA
That's the driving distance. It would take 1 day 11 hours to go from Harlingen, Texas to Petaluma, California.
The flight distance (direct flight from Harlingen, TX to Petaluma, CA) is 1,670.68 mi.
2,013 mi = 3,239.12 kms