IRVINE, CA -- Entrepreneur magazine recently released its 31st annual Franchise 500 list, which once again recognized 10 fitness companies.

Jazzercise Inc. leads all fitness franchise companies on the list at No. 18. Other fitness companies in the top 500 are Anytime Fitness (No. 43), Snap Fitness (No. 51), Gold’s Gym International (No. 109), Fitness Together (No. 118), The Little Gym (No. 141), Planet Fitness (No. 157), My Gym Children’s Fitness Center (No. 208), LA Boxing Franchise Corp. (No. 427) and Personal Training Institute (No. 451).

Noticeably absent from the list is Curves, which was No. 381 last year. Curves was No. 2 on the list in 2004 and 2005, No. 3 in 2006, No. 15 in 2007 and fell all the way to No. 185 in 2008.

Only franchise companies that sent full Franchise Disclosure Documents (FDDs) and whose information is verified by Entrepreneur received a listing in the magazine. To be eligible for the list, a franchise company must have a minimum of 10 units with at least one based in the United States, must be seeking new franchisees in the U.S. and cannot be in Chapter 11 at the time the ranking is compiled.

Jazzercise also is No. 5 on Entrepreneur’s top 10 home-based franchise list. The Little Gym ranked No. 1 in the children’s fitness category for the fourth consecutive year.

Visit the Entrepreneur site for the complete Franchise 500 listing.