Cucamonga Peak, Mountain summit in San Gabriel Mountains, California, US.

Cucamonga Peak is a granite summit in the San Gabriel Mountains that stands at 8,862 feet. The mountain sits within the San Bernardino National Forest and provides expansive views across the surrounding landscape toward Los Angeles and the Inland Empire.

The peak's name comes from Rancho Cucamonga, a Mexican land grant from the 19th century that covered the valley below the mountain. This territorial concession shaped the region's early history long before the slopes became a hiking destination.

The name comes from Rancho Cucamonga, the 19th-century Mexican land grant on the plain below the mountain. Hikers today follow the old Icehouse Canyon route, where the trailhead sits at the foot of the peak's north side.

The most popular route starts in Icehouse Canyon: Forest Service trail 7W07 climbs to Icehouse Saddle, then the Cucamonga Peak Trail (7W04) continues to the summit, 14 miles round trip with 4,300 feet of elevation gain. A wilderness permit is required for vehicles. Near the top there is no shelter from wind or sun, so carry a jacket or windbreaker, and expect snow patches on parts of the route depending on the season.

On clear days, hikers can see Mount San Jacinto and distant urban areas from the summit, revealing the expansive sight line across Southern California. This panorama demonstrates how close the peak sits to major population centers despite being surrounded by untouched wilderness.