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24-Hour Gyms in Simi Valley, CA

4 of the 9 gyms we list in Simi Valley 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

    1352 Madera Road, Simi Valley, CA 93065

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

    Sauna or steam24-hour accessGroup classes
    Call Website Directions

  2. 24 Hour Fitness

    2350 Tapo St, Simi Valley, CA 93063

    Sauna or steam24-hour accessGroup classes
    Call Website Directions

  3. Anytime Fitness

    2941 Cochran St, Simi Valley, CA 93065-2789

    Open 24 hours

    24-hour access
    Call Website Directions

  4. Snap Fitness Simi Valley

    3200 E Los Angeles Ave, Ste 15, Simi Valley, CA 93065

    Sauna or steam24-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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24-Hour Gyms near Simi Valley

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.