Ontario Peak Hike Guide

No caption provided.

At about 1.7 miles, you officially enter the Cucamonga Wilderness area.

Start hiking on the Icehouse Canyon trail as it gently climbs along Icehouse Creek. You’ll pass some cabins and ruins as you go. The ruin of the big fireplace is the old Icehouse Canyon Resort, a tavern built in 1921 that burned down in 1980. At about 0.5

The hiking permit box is to your left by the board.

The trailhead is at the far corner of the lot and has notices and updates for the Cucamonga Wilderness.

From Icehouse Saddle the trail climbs to Bighorn Peak, dips through a saddle, then climbs again to the Ontario Peak summit.

There is plenty of parking at the Icehouse Canyon trailhead, but it fills up quickly on weekends. There are also primitive bathrooms here, the only ones on the hike.

No caption provided.

The hiking permit box is to your left by the board.

The trailhead is at the far corner of the lot and has notices and updates for the Cucamonga Wilderness.

The hike is a steady uphill effort, with a small dip in-between Bighorn Peak and Ontario Peak.

You hike up to Icehouse Saddle, then up to a higher ridge where you hike Bighorn Peak to the left, then Ontario Peak to the right.

There is plenty of parking at the Icehouse Canyon trailhead, but it fills up quickly on weekends. There are also primitive bathrooms here, the only ones on the hike.

No caption provided.

No caption provided.