There are
1,610 mi
from San Angelo, TX to Gaithersburg, MD
That's the driving distance. It would take 1 day 4 hours to go from San Angelo, Texas to Gaithersburg, Maryland.
The flight distance (direct flight from San Angelo, TX to Gaithersburg, MD) is 1,408.46 mi.
1,610 mi = 1.61 kms