There are
638 mi
from Provo, UT to San Jacinto, CA
That's the driving distance. It would take 11 hours 8 mins to go from Provo, Utah to San Jacinto, California.
The flight distance (direct flight from Provo, UT to San Jacinto, CA) is 532.77 mi.
638 mi = 1,026.74 kms