Simi Peak via China Flats Trail is a 6 mile out-and-back hike which features panoramic views of the surrounding cities. It is also the highest peak in Simi Hills, with an elevation of 2,405 feet.
You can get more info about this trail in my adventure post in The Outbound.
Looking for other mountains to summit or trails to try in Los Angeles? Check out my post about Mount Baldy, the highest peak in the L.A. county with an elevation of 10,068ft; as well as my Top 5 Unique Hikes in Los Angeles.