>>669513If you have never been to southern Utah, and like weird rock formations, I'd recommend it. (pic)
It might be warmer in the spring but I'd check the data
Colorado has >50 14ers but they're probably still under snow in the spring. Bring your ice axe. I think there is even a road that goes up to 12,000ft
Idaho is sort of like Wyoming in that it is the second least populated state. They have loads of gems and Craters of the Moon is awesome. I've only been there twice, but maybe some friendly Idahoan can comment.