Long before CicLAvia, there was Dirt Mulholland. For more than seven miles above a city where even the rivers are paved, one of L.A.’s most famous streets is free of concrete and cars, leaving this dusty route to hikers, mountain bikers, and the occasional coyote. Dirt Mulholland traces the narrow divide between regions of Los Angeles that can feel like separate worlds. But walk or pedal west toward Woodland Hills, past the onetime Nike missile site at San Vicente Mountain Park, and you can drop down side trails through stands of sweet sage and ceanothus into the San Fernando Valley, Topanga, or Pacific Palisades. View map.