There are
1,064 mi
from Sunnyvale, CA to Butte, MT
That's the driving distance. It would take 18 hours 29 mins to go from Sunnyvale, California to Butte, Montana.
The flight distance (direct flight from Sunnyvale, CA to Butte, MT) is 771.04 mi.
1,064 mi = 1.61 kms