There are
1,252 mi
from Gaithersburg, MD to Yankton, SD
That's the driving distance. It would take 22 hours 58 mins to go from Gaithersburg, Maryland to Yankton, South Dakota.
The flight distance (direct flight from Gaithersburg, MD to Yankton, SD) is 1,081.16 mi.
1,252 mi = 2,015.18 kms