There are
707 mi
from Ogden, UT to Monrovia, CA
That's the driving distance. It would take 12 hours 19 mins to go from Ogden, Utah to Monrovia, California.
The flight distance (direct flight from Ogden, UT to Monrovia, CA) is 589.43 mi.
707 mi = 1,137.80 kms