There are
434 mi
from Walnut Creek, CA to Yucaipa, CA
That's the driving distance. It would take 8 hours 7 mins to go from Walnut Creek, California to Yucaipa, California.
The flight distance (direct flight from Walnut Creek, CA to Yucaipa, CA) is 387.77 mi.
434 mi = 698.82 kms