There are
743 mi
from Irvine, CA to Brigham City, UT
That's the driving distance. It would take 13 hours 2 mins to go from Irvine, California to Brigham City, Utah.
The flight distance (direct flight from Irvine, CA to Brigham City, UT) is 626.12 mi.
743 mi = 1,196.24 kms