There are
189 mi
from Thornton, CO to Scottsbluff, NE
That's the driving distance. It would take 3 hours 33 mins to go from Thornton, Colorado to Scottsbluff, Nebraska.
The flight distance (direct flight from Thornton, CO to Scottsbluff, NE) is 154.18 mi.
189 mi = 304.54 kms