I don't know where in CO but here is some info on upcoming ones. The Denver National Quilt Festival by Mancuso is in early May at the Merchandise Mart in North Denver. (See more about this show at
http://www.quiltfest.com) The Arapahoe County Quilters has a show in early June in the south Denver area. The Colorado Quilt Council has its biannual statewide show at Quilt Colorado in Estes Park, CO in mid-June, and there is a Rocky Mtn. Quilt show in Fort Collins, CO in late August. This show has the entire Hoffman Challenge before it goes out on the road in small groups. Hope this helps!