Summer trip?

[wisconsinteacher]

We are looking at going to Estes Park in CO for 3 days then west to Canyonland National Park in UT along with Arches National Park.  If you have every been to these parks, what things can a guy miss or not miss while there?  We are willing to hike and use the car to get to the best places to see the views.  My wife and I are looking for any and all info.  Thanks