24 Hour Fitness Worldwide, the world’s largest privately owned and operated fitness center chain, began as a one-club operation in 1983. Our vision is to make fitness a way of life by creating the ultimate in multi-sport fitness centers and making them affordable and accessible to people of all abilities and fitness levels. We provide membership to over 385 clubs across America and also offer an array of fitness and nutritional products- all of which are available on our online store.