There are
637 mi
from Fontana, CA to Taylorsville, UT
That's the driving distance. It would take 11 hours 2 mins to go from Fontana, California to Taylorsville, Utah.
The flight distance (direct flight from Fontana, CA to Taylorsville, UT) is 545.12 mi.
637 mi = 1,024.38 kms