There are
1,857 mi
from Gaithersburg, MD to Roma, TX
That's the driving distance. It would take 1 day 9 hours to go from Gaithersburg, Maryland to Roma, Texas.
The flight distance (direct flight from Gaithersburg, MD to Roma, TX) is 1,535.71 mi.
1,857 mi = 2,988.19 kms