There are
1,493 mi
from Brownsville, TX to Rapid City, SD
That's the driving distance. It would take 1 day 4 hours to go from Brownsville, Texas to Rapid City, South Dakota.
The flight distance (direct flight from Brownsville, TX to Rapid City, SD) is 1,296.43 mi.
1,493 mi = 1.61 kms