Modjeska and Santiago Peaks

Modjeska and Santiago Peaks comprise the Saddleback Formation that forms the skyline east of Orange County. They are the two tallest peaks in Orange County, and can be summited in one day.

Mount Baldy via Register Ridge

An alternative route up one of the better effort / reward ratio hikes in the area.

San Gorgonio Mountain

San Gorgonio Mountain is the highest peak in Southern California at 11,503 feet.

Chino Hills

For such a densely populated area, Orange County has a large number of hiking trails.