Miles between Allentown, PA and Boulder, CO

There are
1,719 mi
from Allentown, PA to Boulder, CO

That's the driving distance. It would take 1 day 6 hours to go from Allentown, Pennsylvania to Boulder, Colorado.

The flight distance (direct flight from Allentown, PA to Boulder, CO) is 1,562.05 mi.

1,719 mi = 1.61 kms