Mile Square Regional Park is an urban park located in the City of Fountain Valley and totals 607 acres of land. Within the park's boundaries are three regulation golf courses, three soccer fields, three baseball and three softball diamonds, an archery range and a nature area. Also, there are two fishing lakes, concession operated bike and paddle boat operations, a wide expanse of picnic areas as well as numerous picnic shelters.
• Dogs must be restrained by a leash at all times (6 foot maximum).