There are
925 mi
from Irvine, CA to Rexburg, ID
That's the driving distance. It would take 15 hours 58 mins to go from Irvine, California to Rexburg, Idaho.
The flight distance (direct flight from Irvine, CA to Rexburg, ID) is 771.23 mi.
925 mi = 1,488.45 kms