There are
786 mi
from Layton, UT to Sunnyvale, CA
That's the driving distance. It would take 13 hours 39 mins to go from Layton, Utah to Sunnyvale, California.
The flight distance (direct flight from Layton, UT to Sunnyvale, CA) is 595.62 mi.
786 mi = 1,265.58 kms