The US has always been a country of scale. America has big food portions, big cities, and yes, big gyms. With fitness becoming a mainstream part of everyday life, gyms across the US now compete not just in size, but also in membership numbers, variety of facilities, and cultural influence. The largest gyms in the US have something for you. Whether you’re a beginner trying to lose weight, a traveler who needs flexible access, or a bodybuilder chasing strength goals.

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Here’s an updated 2025 guide to the biggest gym chains in America and why they matter.

1. Planet Fitness (The Budget-Friendly Giant)

Planet Fitness dominates the fitness market because of its affordability and beginner-friendly vibe. It may not appeal to hardcore lifters due to its limited free weights, but its “Judgement Free Zone” motto makes it the most approachable fitness brand in the US.

• Membership Base: Over 18 million members.
• Pricing: $10–$24.99 per month.
• Facilities: Cardio machines, resistance machines, limited free weights, massage chairs, tanning (in some locations).
• Why It’s Huge: Affordable, beginner-friendly, and everywhere.

2. Anytime Fitness (Accessibility King)

For frequent travelers, Anytime Fitness is unbeatable. With thousands of small gyms across the US (and worldwide), you can swipe in and train anywhere, anytime.

• Membership Base: 4+ million members, 5,000+ locations.
• Pricing: $40–$60 per month.
• Facilities: Compact gyms with weights, cardio, and basic classes.
• Why It’s Huge: 24/7 global access with one membership.

3. LA Fitness (The All-Rounder)

• Membership Base: 3+ million members.
• Pricing: $30–$50 per month.
• Facilities: Cardio, weights, swimming pools, basketball courts, racquetball, yoga, and group classes.
• Why It’s Huge: Wide variety of equipment and sports facilities.

If you want more than a workout, LA Fitness has you covered. It’s a mid-tier gym chain with facilities beyond treadmills and barbells.

4. 24 Hour Fitness (For the Night Owls)

Shift workers, late-night lifters, and early risers love 24 Hour Fitness. It gives people the flexibility to train whenever their schedule allows.

• Membership Base: 2.5+ million members.
• Pricing: $30–$60 per month.
• Facilities: Cardio, weights, group classes, swimming pools, saunas.
• Why It’s Huge: True 24/7 accessibility across many locations.

5. Gold’s Gym (The Mecca of Bodybuilding)

Gold’s Gym is legendary. If you’re serious about strength and bodybuilding, this is still the cultural landmark of fitness in the US.

• Membership Base: 2 million+ worldwide.
• Pricing: $40–$70 per month (location-dependent).
• Facilities: Extensive free weights, machines, personal training, and bodybuilding heritage.
• Why It’s Huge: The home of Arnold Schwarzenegger and the bodybuilding movement.

6. Equinox (Luxury Fitness Redefined)

Equinox isn’t about affordability; it’s about status. Think of it as the “luxury car” of gyms. From eucalyptus towels to high-end group classes, Equinox sets the standard for upscale fitness.

• Membership Base: Smaller but exclusive.
• Pricing: $200–$500+ per month.
• Facilities: Spa-style gyms, boutique classes, pools, wellness services.
• Why It’s Huge: Premium lifestyle appeal.

7. Crunch Fitness (Fun Meets Affordability)

• Membership Base: 2 million+ members.
• Pricing: $15–$30 per month.
• Facilities: Cardio, weights, HIIT zones, classes.
• Why It’s Huge: Affordable memberships with a playful brand identity.

Crunch has steadily grown because it combines low prices with a fun, youthful vibe. This is a great option for beginners who also want variety in classes.

8. Lifetime Fitness – A Health Club Experience

Lifetime is for those who want a family-friendly, all-in-one experience. This has gym, spa, pool, and even social events.

• Membership Base: 1.5 million+ members.
• Pricing: $70–$250 per month.
• Facilities: Luxury gyms, pools, basketball courts, spas, and coworking spaces.
• Why It’s Huge: Positioned as a “healthy lifestyle resort” rather than just a gym.

9. YMCA gym (Community-Based Fitness)

For families, the YMCA is more than a gym. This is a safe place to work out, swim, and take kids to activities.

• Membership Base: Millions across 2,500+ locations.
• Pricing: $40–$80 per month.
• Facilities: Gyms, swimming pools, childcare, group programs.
• Why It’s Huge: Affordable and family-friendly with a community focus.

10. Orangetheory Fitness (Group Training Revolution)

Orangetheory focuses on science-driven HIIT training. This makes it popular with people who want measurable results.

• Membership Base: 1.4 million+.
• Pricing: $59–$159 per month (class-based).
• Facilities: Heart-rate-based HIIT group training.
• Why It’s Huge: Science-backed training and community-driven workouts.

11. F45 Training – Celebrity-Backed Fitness Trend

F45 is trendy, intense, and designed for people who love group accountability.

• Membership Base: Over 1 million worldwide.
• Pricing: $150–$250 per month.
• Facilities: Circuit-style group workouts.
• Why It’s Huge: Backed by celebrities like Mark Wahlberg, it thrives on community-driven fitness.

Why These Gyms Dominate

The largest gyms in the US succeed because they each target a specific audience:

• Budget-conscious beginners → Planet Fitness, Crunch.
• Flexible travelers → Anytime Fitness, 24 Hour Fitness.
• Hardcore lifters → Gold’s Gym.
• Luxury seekers → Equinox, Lifetime Fitness.
• Community-focused families → YMCA.
• Group training fans → Orangetheory, F45.

This variety makes the US fitness landscape one of the most diverse in the world.

Conclusion

The largest gyms in the US reflect how diverse fitness needs are. From $10 Planet Fitness memberships to $500 Equinox luxury packages, there’s a fitness home for everyone. Whether you’re chasing strength, convenience, or community, these gym chains dominate the American fitness scene in 2025.

Are you ready to find the best gym for your goals? Stay inspired and get more fitness tips by following our various platforms.