There are
1,976 mi
from Brownsville, TX to Sunnyvale, CA
That's the driving distance. It would take 1 day 10 hours to go from Brownsville, Texas to Sunnyvale, California.
The flight distance (direct flight from Brownsville, TX to Sunnyvale, CA) is 1,639.41 mi.
1,976 mi = 1.61 kms