There are
663 mi
from Rialto, CA to Kaysville, UT
That's the driving distance. It would take 11 hours 31 mins to go from Rialto, California to Kaysville, Utah.
The flight distance (direct flight from Rialto, CA to Kaysville, UT) is 563.31 mi.
663 mi = 1,067.12 kms