I-25
It is 842.20 miles according to MapQuest by the fastest route.
It is 1,073 miles via the fastest route according to Google Maps.
It's 138 miles from Colorado Springs to Eaton.
From the main post office in Albuquerque to the main post office in Colorado Springs is 378 miles.
That drive can be made in an estimated 12 hours and 43 minutes via Wichita Falls, Amarillo, Dalhart, and Trinidad on US Highway 287 and then heading heading North on Interstate Highway 25. The distance is 726 miles and Amarillo is an excellent halfway point if you aren't in a hurry.
According to Google Maps, it's about 640 to 660 miles from Colorado Springs to Harlan, Iowa, depending on which route you take.
Easily. You can drive through numerous states between those two locations although it may not be via the fastest or the shortest route. In this trip, the fastest route does not enter Colorado.
I-95 to I-10 to I-25
It is 580 miles by the fastest MapQuest Route.
Depends on the route you take and on traffic. But I would assume at least no longer than an hour maximum
By going south to Denver, then west on Interstate 70, then north on Route 9, and northwest on Route 40.
It is 964 miles via the fastest route according to google maps.