There are
919 mi
from Fargo, ND to Rexburg, ID
That's the driving distance. It would take 15 hours 53 mins to go from Fargo, North Dakota to Rexburg, Idaho.
The flight distance (direct flight from Fargo, ND to Rexburg, ID) is 756.73 mi.
919 mi = 1,478.94 kms