Fitness Center A fitness center is a place where both recreational and professional athletes can work out near you. Find Near Search {"bg":"","mt":"","mr":"","mb":3,"ml":"","pt":"","pr":"","pb":"","pl":"","border":"","rounded":"","rounded_size":"","shadow":""} Mountainside Fitness Arrowhead No Reviews Favorite Website Phone: (480) 625-0228 Address: 20250 North 75th Avenue Glendale Arizona 85308 United States Mountainside Fitness location at Arrowhead is conveniently located off 75th Ave. & Loop 101. Read more...