There are
1,978 mi
from Sunnyvale, CA to Brownsville, TX
That's the driving distance. It would take 1 day 10 hours to go from Sunnyvale, California to Brownsville, Texas.
The flight distance (direct flight from Sunnyvale, CA to Brownsville, TX) is 1,639.41 mi.
1,978 mi = 1.61 kms