Mount San Antonio

Mount San Antonio (10,064 ft / 3,068 m), known as Mount Baldy, is the highest peak in the San Gabriel Mountains overlooking the Los Angeles Basin. The Devil's Backbone Trail from Manker Flats is a popular 11-mile round-trip route with 3,900 ft gain, featuring exposed ridges and panoramic views of the city sprawl, San Bernardino Mountains, and Channel Islands on clear days. It's a local favorite for training, fall foliage, and winter snow hikes; the nearby ski resort adds year-round appeal. Less remote than Sierra peaks but rewarding with urban escape and sweeping vistas. Permits and parking fees apply in the Angeles National Forest.