I signed up for a 3 month membership at CAC Boulder (off 29th) and there is two months remaining. It's $112/month, but I'm selling the last ~2 months for $100 total. The membership will expire at the end of September, but you'll have the option to renew.

Great options of masters swim classes every day, excellent inside gym, also has massage, fitness classes, and personal training sessions at an additional fee within the gym.