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24-Hour Gyms in Castle Rock, CO

5 of the 8 gyms we list in Castle Rock have 24-hour access.

A "24 hours" badge on a map listing doesn't say whether that means a staffed front desk around the clock or just keyfob access after the trainers go home — a difference you only discover at the door. Every 24-hour gym listed here has that access confirmed from the gym's own posted hours or membership page.

  1. 24 Hour Fitness

    5745 New Abbey Lane, Castle Rock, CO 80108

    Mon-Thu 5am-10pm, Fri 5am-9pm, Sat-Sun 6am-8pm

    Sauna or steam24-hour accessGroup classes
    Call Website Directions

  2. Fitness 1440

    880 W Happy Canyon Rd, Castle Rock, CO 80108-3913

    Sauna or steam24-hour accessGroup classes
    Call Website Directions

  3. Anytime Fitness

    794 S Perry St, Castle Rock, CO 80104-1943

    Open 24 hours

    24-hour access
    Call Website Directions

  4. Aesthetix Gym

    1010 I-25, Castle Rock, CO 80104

    24-hour access
    Call Website Directions

  5. Arcane Barbell

    680 Atchison Way, Castle Rock, CO 80109

    24-hour access
    Website Directions
Get your keyfob or access code set up during staffed hours. Most 24-hour gyms only issue fobs or door codes at the front desk during normal business hours, so signing up at 11 p.m. usually means waiting until morning to actually get in.

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Good to know

Are there gyms open 24 hours near me?

Yes — many regional and national chains keep at least one location per metro area open around the clock, usually with keyfob entry after staffed hours end. Independent gyms less commonly offer true 24/7 access since it requires either overnight staff or a secure unstaffed entry system.

Is a 24-hour gym staffed all night?

Usually not. Most 24-hour gyms have staff on-site during peak hours — mornings, evenings, weekends — and switch to unstaffed keyfob-only access overnight, with cameras and emergency call buttons standing in for a front desk.