Etiwanda Peak, Cucamonga Peak From Peak 7,200+ On San Sevaine Ridge. This view is much harder to come by now due to major landslides on San Sevaine Road. The 12-mile approach to the trailhead to Etiwanda and Cucamonga Peaks has become a major issue. This 7,200+ ft. vantage point is the most easterly 7,000 ftoot peak in the San Gabriels.