There are
813 mi
from Provo, UT to Los Altos, CA
That's the driving distance. It would take 14 hours 8 mins to go from Provo, Utah to Los Altos, California.
The flight distance (direct flight from Provo, UT to Los Altos, CA) is 595.86 mi.
813 mi = 1,308.39 kms