There are
1,638 mi
from Grain Valley, MO to Irvine, CA
That's the driving distance. It would take 1 day 4 hours to go from Grain Valley, Missouri to Irvine, California.
The flight distance (direct flight from Grain Valley, MO to Irvine, CA) is 1,359.43 mi.
1,638 mi = 2,636.26 kms