There are
1,762 mi
from Thornton, CO to Passaic, NJ
That's the driving distance. It would take 1 day 7 hours to go from Thornton, Colorado to Passaic, New Jersey.
The flight distance (direct flight from Thornton, CO to Passaic, NJ) is 1,616.83 mi.
1,762 mi = 1.61 kms