There are
1,449 mi
from Asheville, NC to Thornton, CO
That's the driving distance. It would take 1 day 2 hours to go from Asheville, North Carolina to Thornton, Colorado.
The flight distance (direct flight from Asheville, NC to Thornton, CO) is 1,256.32 mi.
1,449 mi = 2,331.60 kms