There are
1,752 mi
from Thornton, CO to Somerville, NJ
That's the driving distance. It would take 1 day 7 hours to go from Thornton, Colorado to Somerville, New Jersey.
The flight distance (direct flight from Thornton, CO to Somerville, NJ) is 1,594.59 mi.
1,752 mi = 1.61 kms