There are
1,608 mi
from Walnut Creek, CA to Oklahoma City, OK
That's the driving distance. It would take 1 day 4 hours to go from Walnut Creek, California to Oklahoma City, Oklahoma.
The flight distance (direct flight from Walnut Creek, CA to Oklahoma City, OK) is 1,366.56 mi.
1,608 mi = 2,587.51 kms