The Alum Rock section of the Penitencia Creek Trail is located in the City of San Jose's Alum Rock Park. The existing trail was once the rail bed for the Peninsular Railroad during the early 1900's. The trail runs along Penitencia Creek from the entrance of Alum Rock Park through the main area of the park and on to No Horse Bridge where it connects to the South Rim Switchback trail. The trail provides a scenic 2.5 mile walk through the shaded canyon floor and connects with several trails that lead through out Alum Rock Park. The route is also part of the Bay Area Ridge Trail.
