This is a fun one to read, especially for me, after having lived in Denver, Colorado Springs, Manitou Springs and now DC (among other places).

Will you be skiing in Breckenridge? If so, use the extra time after Boulder to do a snowmobile tour in the Rocky Mountain National Park -- or near Evergreen...or in Winter Park. There's no better way to appreciate the beauty of the forest.

As much as I love Colorado, I would never really recommend Denver to visit. I tell my friends that it's just like Kansas City or St. Louis or Cleveland, etc. except that it happens to be located sorta close to the mountains. (At least an hour...)

Garden of the Gods in the Springs is beautiful, but moreso in the summer. Actually, I'd skip Manitou also.

Sorry to be negative...just my thoughts.

I LOVE Denver, although in your case one day might suffice since you'll be visiting Colorado for the scenery. If you are into antiquing or digging in "junk shops" for treasures, you should not miss the strip of shops on Broadway. I live in NYC and find collectibles shopping in Denver that would cost triple here.

If that's not your thing, there is some good dining in Denver as well.

Lastly, I have to agree with the previous poster about a Coors brewery tour, it's great fun!

Marlena