We made it into Dubuque on Saturday afternoon after a long night on Friday with my wife's car stalling. We had a good time in a little over a day stay in Dubuque. It seems to be a nice city with a lot to do. We were not able to do much but we did spend time along the Mississippi and tour the huge museum there.
My wife and I will be back in a few weeks for a wedding so maybe we will check it out a little more then. The drive is just a little over 5 hrs from Cambridge MN if you drive straight through. (Who does that.)