There are
1,706 mi
from Thornton, CO to Phillipsburg, NJ
That's the driving distance. It would take 1 day 6 hours to go from Thornton, Colorado to Phillipsburg, New Jersey.
The flight distance (direct flight from Thornton, CO to Phillipsburg, NJ) is 1,563.31 mi.
1,706 mi = 1.61 kms