There are
1,863 mi
from Half Moon Bay, CA to Robstown, TX
That's the driving distance. It would take 1 day 8 hours to go from Half Moon Bay, California to Robstown, Texas.
The flight distance (direct flight from Half Moon Bay, CA to Robstown, TX) is 1,581.79 mi.
1,863 mi = 2,997.43 kms