Los Peñasquitos Canyon Preserve attracts people with its natural beauty and rich natural resources both today and in the past. Native American history within the Preserve dates back as far as 7,000 years ago, with remains of the prehistoric culture still visible throughout the area. More recently the canyon was part of the first Mexican land grant in San Diego County, adding another layer of historical significance to the landscape you’ll walk through.

Los Peñasquitos Canyon and its tributary, Lopez Canyon, are characterized by remarkable biodiversity. Over 500 plant species thrive here, along with more than 175 types of birds and a great variety of reptiles, amphibians and mammals. Many of these species are rare or endangered and are protected within the Preserve. The scenery includes a waterfall cascading through volcanic rock, a streamside forest of giant California live oaks, and groves of majestic sycamore trees that provide welcome shade on hot days.

Located between Rancho Peñasquitos and Sorrento Hills to the north and Mira Mesa to the south, the preserve offers an approximately 7-mile trail with scenic views throughout. The waterfall appears about halfway down the trail, so you’ll have a clear goal to work toward. Dogs must be leashed at all times while hiking here.

Before you go, know that open space areas are home to rattlesnakes, poison oaks, mountain lions, and rugged terrain. Good awareness and preparation make a real difference. Bring plenty of water—more than you think you’ll need, since the canyon sun is intense—along with sun protection and sturdy footwear. The trail can be rocky in places, and your dog will appreciate having you move carefully over the uneven ground. Start early in the day if you can, as afternoon heat in the canyon builds quickly.