There are
2,037 mi
from Thornton, CO to North Lauderdale, FL
That's the driving distance. It would take 1 day 12 hours to go from Thornton, Colorado to North Lauderdale, Florida.
The flight distance (direct flight from Thornton, CO to North Lauderdale, FL) is 1,706.47 mi.
2,037 mi = 3.22 kms