California, United States
Double Peak is the second-highest mountain in the Cerro de las Posas mountain range, located in San Marcos, California. The elevation at the is summit is 1644 feet, and approximately 1,000 feet (305 m) above the north foot of the mountain. Most trails leading to the summit of Double Peak are classified as "moderately strenuous."
Double Peak is a popular hiking and biking area due to its many trails and convenient access points. On the north side, the mountain can be accessed by hikers and bikers through Discovery Lake Park, but this trailhead is closed to motorized vehicles. On the south side, the mountain can be accessed by vehicles through Double Peak Drive, extending from the neighborhood of San Elijo Hills. Both the North and the South access trails offer wide, partially paved surfaces. There is also a less-accessible rock and dirt trail which allows summiting the mountain from the East side. The Eastern trail has a steep incline, with rugged, staircase-like rock extrusions and at some points, loosely packed shale. The Eastern trail can only be accessed by following other trails along either the north or south face of the mountain, around to the eastern face of the mountain.
Accessing the mountain from the north side, at Discovery Lake Park, a City of San Marcos information sign states that the length of the trail is 2.5 miles from the park to the summit.