There are
1,810 mi
from Topeka, KS to Half Moon Bay, CA
That's the driving distance. It would take 1 day 6 hours to go from Topeka, Kansas to Half Moon Bay, California.
The flight distance (direct flight from Topeka, KS to Half Moon Bay, CA) is 1,449.66 mi.
1,810 mi = 1.61 kms