The Maricopa County Regional Trail System is a collection of trail corridors under the jurisdiction and control of many different agencies. Maricopa County has identified the Sun Circle and Maricopa Trails as its highest priorities for completion. At any time, should the opportunity arise, lower priority segments may be developed. The County’s priority designation may or may not coincide with the priorities of any agency whose trails have been identified as components of the regional system.

Maricopa County's Parks and Recreation Department now features one of the nation's largest county park systems, with 10 regional parks totaling more than 120,000 acres. In an effort to manage the future needs of residents and the growth of the county the Department decided to update the previous Master Plan for the Park System which was completed over 40 years ago. The Strategic System Master Plan evaluates all aspects of the Department’s management efforts and seeks strong community input into the elements and expectations they have for the system today and in the future.