There are
2,029 mi
from Deerfield Beach, FL to Thornton, CO
That's the driving distance. It would take 1 day 12 hours to go from Deerfield Beach, Florida to Thornton, Colorado.
The flight distance (direct flight from Deerfield Beach, FL to Thornton, CO) is 1,708.03 mi.
2,029 mi = 3.22 kms