Penitencia Creek County Park is a long, skinny stretch of protected land that runs for four miles along Penitencia Creek in San Jose, connecting Alum Rock Regional Park to where the creek meets Coyote Creek. It’s a genuine hiking corridor rather than a traditional park—a collaboration between Santa Clara County, the City of San Jose, and the Santa Clara Valley Water District that spans 163 acres.

When you visit with your dog on leash, you’re walking through a mix of riparian habitat and open space. The trail follows the creek the whole way, which means you’ll have water running alongside you and plenty of shade from mature trees. This is particularly nice during hot Central Valley days. The scenery shifts as you move along—you might see native oak woodlands, grassland sections, and plenty of bird activity. Herons and egrets are common sightings along the water.

The trail is mostly developed and hikeable, though it’s still technically incomplete in some stretches. That doesn’t mean impassable—it just means you might encounter minor rough patches or areas where the trail narrows. Most people find the main sections easily walkable. The connection to Alum Rock Regional Park on one end gives you options if you want a longer outing; Alum Rock itself has additional trails and more developed amenities if you need to grab water or find a restroom.

Because it’s a linear trail following the creek, you can do as much or as little as you want. Some people walk just a mile or two, while others tackle longer sections. Your dog needs to stay on leash the entire time, which is standard for county parks in this area.

The terrain is generally easy to moderate depending on which section you explore. Bring water for both of you—there’s a creek nearby but you’ll want your own supply. The park is accessible year-round, though spring offers the fullest water flow and most vibrant wildflowers.