There are
1,577 mi
from San Bernardino, CA to Brownsville, TX
That's the driving distance. It would take 1 day 2 hours to go from San Bernardino, California to Brownsville, Texas.
The flight distance (direct flight from San Bernardino, CA to Brownsville, TX) is 1,309.83 mi.
1,577 mi = 1.61 kms