There are
2,100 mi
from Walnut Creek, CA to Farmington, MO
That's the driving distance. It would take 1 day 12 hours to go from Walnut Creek, California to Farmington, Missouri.
The flight distance (direct flight from Walnut Creek, CA to Farmington, MO) is 1,718.14 mi.
2,100 mi = 3,379.44 kms