There are
1,429 mi
from Gaithersburg, MD to Alvin, TX
That's the driving distance. It would take 1 day 2 hours to go from Gaithersburg, Maryland to Alvin, Texas.
The flight distance (direct flight from Gaithersburg, MD to Alvin, TX) is 1,226 mi.
1,429 mi = 2,299.91 kms