There are
1,445 mi
from Gaithersburg, MD to Richmond, TX
That's the driving distance. It would take 1 day 2 hours to go from Gaithersburg, Maryland to Richmond, Texas.
The flight distance (direct flight from Gaithersburg, MD to Richmond, TX) is 1,243.99 mi.
1,445 mi = 2,326.30 kms