Ventura Boulevard is one of the primary east–west thoroughfares in the San Fernando Valley, California, USA; as it was originally a part of the El Camino Real (the trail between Spanish missions), Ventura Boulevard is one of the oldest routes in the San Fernando Valley. It was also U.S. Route 101 before the freeway (which it is parallel to for much of Ventura Boulevard's length) was built and it was also signed as Business U.S.