There are
841 mi
from Fort Smith, AR to Scottsbluff, NE
That's the driving distance. It would take 15 hours 23 mins to go from Fort Smith, Arkansas to Scottsbluff, Nebraska.
The flight distance (direct flight from Fort Smith, AR to Scottsbluff, NE) is 670.46 mi.
841 mi = 1,352.78 kms