There are
1,702 mi
from Lewisville, TX to Half Moon Bay, CA
That's the driving distance. It would take 1 day 6 hours to go from Lewisville, Texas to Half Moon Bay, California.
The flight distance (direct flight from Lewisville, TX to Half Moon Bay, CA) is 1,462.40 mi.
1,702 mi = 2,739.39 kms