There are
1,827 mi
from Waltham, MA to Seabrook, TX
That's the driving distance. It would take 1 day 10 hours to go from Waltham, Massachusetts to Seabrook, Texas.
The flight distance (direct flight from Waltham, MA to Seabrook, TX) is 1,589.15 mi.
1,827 mi = 2,939.75 kms