Overview
Cucamonga Peak stands at 8,862 feet on the western edge of San Bernardino National Forest, rising above the Mt. Baldy area and visible from much of the Inland Empire below. The Icehouse Canyon approach is the most popular route: it begins in a shaded canyon with oaks and canyon maples, climbs steeply to Icehouse Saddle at about 9,000 feet, and then follows an exposed ridge to the summit. The view from the top spans the San Gabriel Valley, the Mojave Desert, and on exceptionally clear days, the Pacific Ocean. It's a serious day hike that provides one of the best summit perspectives accessible from the LA metro area without requiring overnight camping. It ranks among the top summit objectives in California that can be completed in a single day from a major metropolitan area.
The route covers 12 miles round trip with 4,300 feet of elevation gain, starting at the Icehouse Canyon Trailhead at roughly 5,600 feet. The strenuous rating is earned: this is sustained climbing with few flat sections and significant exposure on the upper ridge. Most hikers with solid trail experience complete it in 6 to 8 hours round trip. A loop variation exists via the Chapman Trail on the descent, which adds about 1.7 miles but offers a different perspective and slightly more variety.
The Route
Miles 0 to 3: Icehouse Canyon. The trail begins in Icehouse Canyon, a shaded, north-facing canyon with a stream running through spring and early summer. You'll pass through lush oak and canyon maple forest, gaining elevation steadily. The canyon is beautiful and relatively cool, providing good conditions for the long climb ahead. Pass several private cabins early in the route.
Miles 3 to 4.5: Icehouse Saddle. The trail steepens significantly on the way to Icehouse Saddle at roughly 9,000 feet. This is the crux of the approach. At the saddle, you reach a trail junction where four peaks branch off: Cucamonga Peak, Mt. Bighorn, Ontario Peak, and Telegraph Peak. Go right (east) toward Cucamonga Peak.
Miles 4.5 to 6: Ridge to summit. The trail from Icehouse Saddle to Cucamonga Peak is an exposed ridge walk of about 1.5 miles. The terrain is rocky and the views open up dramatically. The grade is moderate on this section compared to the canyon approach. The summit at 8,862 feet is marked and offers a wide, open view in every direction. On clear winter days, snow-capped San Gorgonio Mountain to the east is visible.
When to Visit
April and May: The lower Icehouse Canyon section clears of snow by April in most years, but the upper sections above Icehouse Saddle typically hold ice into May or early June. Check current conditions with the San Gorgonio Wilderness Association before any pre-June visit. Canyon wildflowers bloom in April along the creek.
June through July: Prime season. The route is clear of snow, temperatures in the shaded canyon remain tolerable, and the full summit view is accessible. Afternoon thunderstorms become more frequent in July; start by 6 AM and plan to be off the exposed ridge by 1 PM.
August: Summer heat hits the canyon base hard. The starting elevation of 5,600 feet means the lower two miles can be genuinely hot on summer afternoons. Early starts are essential. The exposed upper ridge sees afternoon thunderstorms frequently through August; do not linger on the summit after late morning.
September and October: The best months for this trail. Temperatures drop, crowds thin after Labor Day, and the canyon maple and oak foliage turns color through October, making the lower canyon approach particularly scenic. Fall is the window when the trail conditions align best: comfortable temperatures, stable weather, dry trail surface.
November through March: Snow arrives on the upper sections by November in most years. Icehouse Saddle and the ridge above are icy and potentially dangerous without traction devices. The lower canyon can be hiked in winter, but the summit is a mountaineering objective in snow conditions.
What to Bring
- Water: Many hikers carry 3 or more liters given the limited water sources. The creek in Icehouse Canyon runs through spring and early summer but may dry by August. Above the saddle, there is no water. Individual hydration needs vary based on body weight, pace, and temperature. Carry enough from the trailhead.
- Microspikes: Required for any visit before late May or after November. The upper ridge and saddle hold ice well past the canyon section clearing.
- Sun protection for the ridge: Above Icehouse Saddle, there is no shade. Sunscreen, a hat, and sunglasses are essential for the exposed 1.5-mile ridge to the summit.
- Wind layer: The summit and upper ridge are exposed and consistently windy. A light shell jacket is smart even in warm weather.
- Water for your dog: Dogs are permitted on leash in the Cucamonga Wilderness, but the upper trail has no water. Bring enough for your dog, and a collapsible bowl.
- Headlamp for early starts: A 5 to 6 AM start is necessary on summer weekends to avoid parking chaos and afternoon storms.
Practical Details
Parking: The Icehouse Canyon Trailhead lot holds approximately 40 to 50 vehicles on paved surface. An Adventure Pass (fee as of early 2026 — verify current costs before visiting) or Interagency Annual Pass is required. On summer and fall weekends, the lot fills by 8 AM. Overflow parking is available further down Mt. Baldy Road; walk up to the trailhead. A vault toilet is at the trailhead.
Permits: A free wilderness permit is required for all day hikes and overnight trips in the Cucamonga Wilderness. Permits are issued through the San Gorgonio Wilderness Association (sgwa.org) and are subject to daily quotas. Reserve online before your trip.
Dogs: Allowed on leash in the Cucamonga Wilderness. This is a key difference from the adjacent San Gorgonio Wilderness, which prohibits dogs entirely.
Water: The creek in Icehouse Canyon is generally running through spring and early summer. All creek water should be treated before drinking. Above Icehouse Saddle, no water is available.
Fees: Adventure Pass or America the Beautiful Interagency Annual Pass required for trailhead parking. See the America the Beautiful pass guide for veteran pass details.
Cell service: Limited in the canyon; somewhat better near the saddle and summit.
Fire restrictions: The Cucamonga Wilderness frequently operates under fire restrictions in summer and fall. Check current restrictions at the Mt. Baldy Visitor Center or the San Bernardino NF website.
Getting There
From the 210 Freeway in Upland, take the Mountain Avenue exit and head north. Continue north on Mountain Avenue through the residential area until it connects to Mt. Baldy Road. Follow Mt. Baldy Road into the canyon past the community of Mt. Baldy Village. The Icehouse Canyon Trailhead is approximately 2 miles past the village, on the left side of the road. GPS: 34.2441, -117.6457. From downtown Los Angeles, the drive takes about 1 hour in normal traffic.
Beyond Cucamonga Peak
For a less demanding alternative on the western end of San Bernardino NF, the Cougar Crest Trail at Big Bear Lake offers good views at a fraction of the effort. The best hikes near Los Angeles guide provides additional context on how Cucamonga Peak compares to other LA-area summit options. For those wanting to tick additional peaks on the same day, the Icehouse Saddle junction gives access to Ontario Peak and Telegraph Peak via separate ridgelines, both achievable for fit hikers with time and energy to spare.