Discover gyms in Montclair, NJ through Nusu. Whether seeking 24-hour facilities with extensive cardio equipment, free weights and strength machines, or boutique studios specializing in powerlifting, Olympic weightlifting and functional training, verified presences help you compare membership options, amenities like pools and saunas, personal training services and group class schedules. From full-service health clubs with comprehensive equipment to specialized fitness centers, member reviews guide you to gyms with the right equipment quality, atmosphere and supportive community to match your fitness goals and training style.