There are
1,927 mi
from St Louis, MO to Hanford, CA
That's the driving distance. It would take 1 day 9 hours to go from St Louis, Missouri to Hanford, California.
The flight distance (direct flight from St Louis, MO to Hanford, CA) is 1,615.47 mi.
1,927 mi = 3,101.89 kms