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24-Hour Gyms in Longmont, CO

5 of the 13 gyms we list in Longmont 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. Anytime Fitness

    1111 Francis St, Longmont, CO 80501-3700

    Open 24 hours

    24-hour access
    Call Website Directions

  2. Gold's Gym

    1240 S Hover Rd, Longmont, CO 80501-7902

    24-hour access
    Call Website Directions

  3. Anytime Fitness

    4445 City Centre Rd, Longmont, CO 80504

    24-hour access
    Call Website Directions

  4. Gold's Gym

    1240 Hover St, Longmont, CO 80501

    24-hour access
    Call Website Directions

  5. Dark Horse Fitness

    4250 Salazar Way Unit B, Longmont, CO 80504-3559

    24-hour access
    Call 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.