There are
1,768 mi
from Thornton, CO to Secaucus, NJ
That's the driving distance. It would take 1 day 7 hours to go from Thornton, Colorado to Secaucus, New Jersey.
The flight distance (direct flight from Thornton, CO to Secaucus, NJ) is 1,621.20 mi.
1,768 mi = 1.61 kms