Just on the north end of Canon City the Royal Gorge Gun Club has a really good, and from what I've seen- under utilized range. Membership is required, and bring your own targets. They have a rimfire bay, pistol bays, Trap house, and rifle range (with pits) to 1300 yds. Shot a few of their pistol matches over the summer, pretty informal standard IDPA type shoots, same 8-12 shooters every time. Don't know if this place isn't getting used intentionally, if there are issues with range/club authority, or if nobody knows about it. Figured I'd toss it out there.
http://www.royalgorgegunclub.com/Main.htm