Alum Rock Park is located in a canyon in the Diablo Range foothills on the east side of San Jose. The park offers 13 miles (21 km) of trails, varying from fairly level along Penitencia Creek to sharp switchbacks climbing to the ridges to the South Rim Trail and the North Rim Trail. The narrow floor of the canyon includes a visitor center, picnic areas, a playground, and sand volleyball pits.
This trail is a challenge. All downhill for first half. Then all uphill for rest. Trail was muddy and some landslides had come on top of it. Also walked through a lot of cattle. Gave wide berth to the bulls. Probably not a hike to bring small children, rain, hail, snow, sun, and wind. Very beautiful views.
This was my 3-year olds first hike. I'm from San Diego where most hikes are desert (full sun, no trees) and so this beautiful hike with all the trees and the fact we saw deer gets this hike 5 stars! My son made it to the top. I'm so proud. He asked to be carried one time but that lasted about 10 minutes and then he wanted to walk/explore on his own.