There are
749 mi
from Temecula, CA to Brigham City, UT
That's the driving distance. It would take 13 hours 5 mins to go from Temecula, California to Brigham City, Utah.
The flight distance (direct flight from Temecula, CA to Brigham City, UT) is 620.93 mi.
749 mi = 1,205.25 kms