Mount San Antonio Mountain

Address: Mount San Antonio (Mount Baldy), San Gabriel Mountains near Mount Baldy Village, California, USA

Website: https://www.fs.usda.gov/angeles

Hours: Trails open year-round

Admission: Free (trail access); Angeles National Forest parking/permits or ski-area fees may apply

Mount San Antonio, commonly known as Mount Baldy, is the highest point in Los Angeles County with a summit elevation of 10,064 feet (3,068 metres).

Hikers and climbers use a network of trails that lead to the summit, and a small ski area operates on the eastern slopes during snowy winters. Routes range from steep day-hikes to more technical winter ascents, and the mountain is a popular local outdoor destination.

The peak sits within the San Gabriel Mountains and has long been used for recreation by nearby urban populations; it is managed within national forest lands and local recreation infrastructure developed around the community at the mountain’s base.

Located in the San Gabriel Mountains of southern California, the mountain rises within Los Angeles County and is accessed from mountain villages and trailheads on its flanks.

• Names and elevation: Often called Mount Baldy; the mountain’s official name is Mount San Antonio and the summit elevation is 10,064 feet (3,068 metres).
• Skiing and seasonal conditions: A small ski area operates on the eastern slopes and winter snow frequently makes the summit inaccessible without mountaineering gear.

What to See#

• Summit: The summit at 10,064 feet (3,068 metres) is the high point of Los Angeles County and a commonly reached destination for day hikes and technical winter ascents.

Mount San Antonio (commonly “Mount Baldy”) is reached by road from the Los Angeles basin via freeway and mountain roads to Mount Baldy Village. From downtown Los Angeles expect about a 35-50 mile (55-80 km) drive depending on route and traffic; common approaches use the I‑10 or I‑210 corridors and local roads up to Mount Baldy Road into the village.

Park and begin hikes from trailheads in Mount Baldy Village (the village and its trailheads are the usual access points). Check local road conditions and parking rules before driving into the mountain roads.

• Start very early (pre-dawn in summer) from the Mount Baldy Village trailheads to avoid hot afternoon conditions and the common midday thunderstorms in the San Gabriel Mountains.
• Use the Mount Baldy Village access (Mount Baldy Road) and, if you want to shorten the ascent, check whether the summer chairlift is operating-many hikers use it to gain elevation quickly and reduce exposure on busy days.
• Avoid weekend late-morning departures when parking in the village and at trailheads fills; weekdays or sunrise starts give a much quieter route and better summit views.