MapQuest estimates the driving time as 19 hours and 49 minutes. It is not a good straight-thrugh drive in the winter.
It is a 2.5 hour drive on I-70 East.
About an hour and a quarter.
Southeast
About 18 hours
about 2 minutes
In the state of Colorado, there is no law that makes it illegal to drive a truck without doors. You would need to be sure you have a rear view mirror however.
26 hours
There are many beautiful places to see in Colorado. The most popular place to go would be Collegiate Peaks.
It is about 613 miles.
Illinois is 815 miles away from Colorado, border to border. It would take 11 and a half hours to drive from one to the other. Also if you decide to drive it will take you 1,013 miles to get there from Colorado.
About 1 minute. Cross a bridge over the Colorado River.
Unless you are in the eastern plains, just head north.