There are
1,823 mi
from Irvine, CA to Troy, MO
That's the driving distance. It would take 1 day 7 hours to go from Irvine, California to Troy, Missouri.
The flight distance (direct flight from Irvine, CA to Troy, MO) is 1,530.66 mi.
1,823 mi = 2,934.26 kms