There are
1,307 mi
from Gaithersburg, MD to Jacksonville, TX
That's the driving distance. It would take 23 hours 49 mins to go from Gaithersburg, Maryland to Jacksonville, Texas.
The flight distance (direct flight from Gaithersburg, MD to Jacksonville, TX) is 1,127.57 mi.
1,307 mi = 2,103.04 kms