There are
1,190 mi
from Garland, TX to Mandan, ND
That's the driving distance. It would take 21 hours 33 mins to go from Garland, Texas to Mandan, North Dakota.
The flight distance (direct flight from Garland, TX to Mandan, ND) is 987.05 mi.
1,190 mi = 1.61 kms