There are
1,705 mi
from Arvada, CO to Allentown, PA
That's the driving distance. It would take 1 day 6 hours to go from Arvada, Colorado to Allentown, Pennsylvania.
The flight distance (direct flight from Arvada, CO to Allentown, PA) is 1,555.41 mi.
1,705 mi = 1.61 kms