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Hiking Bighorn and Ontario Peaks

February 14, 2018 By CeCe Lorthioir 3 Comments

Hiking Icehouse Canyon to Ontario Peak

At 8,696 feet, Ontario Peak is one of several peaks in the San Gabriel Mountains, and lies within the Cucamonga Wilderness. It is one of the many peaks near Mt. Baldy which are accessible from the Icehouse Saddle. It is named after the nearby city of Ontario. On a clear day, Ontario Peak offers sweeping views of the spectacular San Gabriel Mountains, the Inland Empire, Los Angeles, Orange County and Pacific Ocean.

Trail Details
Summit: 8,696′
Distance: 12.4 miles
Time: 4-5 hours
Difficulty: Strenuous
Elevation gain: 3,738′
Dogs: Yes
When to go: June – October

Getting to Trailhead

Start at the popular Icehouse Canyon Trailhead. There’s plenty of parking, but it fills up fast. Make sure to head out early before the crowds. We started our hike at 6:30 am. An Adventure Pass is required.

To the left of the trailhead, next to the sign, is a box for self-serve permits (bring a pen with you). Fill one out and leave white copy in the box, take yellow copy with you.

Completing the self-serve permit at the Icehouse Canyon trailhead

Hiking the Trail to Ontario Peak

Hiking up the Icehouse Canyon is a beautiful hike on its own. It is a well-traveled trail, with a creek that meanders alongside it. Surrounded by sugar pine forest, which shades the trail during the Summer months, massive boulders, canyon walls, and mountain peaks line up the trails. And if you’re lucky enough, you may see some of the resident big horn sheep.

Continue hiking up to 3.5 miles to the Icehouse Saddle, gaining 2,700 feet. Once there, it is a good spot for a quick break before you head up to the peak. At the saddle, you will find several trails with signs that lead to Cucamonga Peak, 3 Ts, Middle Fork, and Ontario Peak, which is to the right of the saddle.

CeCe at the saddle

From here, it’s a gentle climb for 1.0 mile to Kelly Camp, gaining only 260 feet.

Kelly Camp is a great spot to camp if you’re doing an overnight. This can be crowded though, especially on weekends. It is a historical place with remnants of foundations of a former trail resort. This was once owned by John Kelly, who built it in 1905 as a mining prospect, then turned into a trail resort in 1922 by Henry Delker. There is a spring nearby, but it is unreliable.

Arriving at Kelly Camp
The ruins of Kelly Camp

The trail continues on beyond the Kelly Camp ruins, then climbs up to a fire-scarred Ontario ridge. At this point, you will have the dramatic view of Timber Mountain, Telegraph Peak and Mt. Baldy.

Views of Telegraph Peak and Mt San Antonio

If squint your eyes, you may even see the tiny blue-green speck of the Ski Hut just below Baldy Notch. As you continue your ascent, you will come upon a fork on the trail with a pile of rocks and a wooden sign that points to Bighorn Peak to the left and Ontario Peak to the right.

This is also a great spot for picture, with a panoramic view of the Inland Empire and beyond Orange County, with the Saddleback Mountain protruding from the distance. You will also have dramatic view of Bighorn Peak to the left and Cucamonga Peak on the right.

Bighorn and Cucamonga Peaks

Continue following the trail as it contours around the two false summits, then zig-zagging up a series of switchbacks.

Switchbacks up to the Ontario Ridge

Eventually, you will arrive on a ridge again to continue your rather steep approach to the summit, but it levels out at 150 yards before Ontario Peak.

Ontario Peak to the west

At the summit, you’ll find a large dead tree, which has become the landmark for Ontario Peak, and a tall heap of boulders. On a clear day, you’ll sweeping views of Inland Empire, Los Angeles and the Pacific Ocean.

CeCe and Hike Beyond the Hills at Ontario Peak
Six-Pack of Peaks Ambassador CeCe on Ontario Peak

On the way back, we took the spur trail to the summit of Bighorn Peak. This added about two miles to the trip, but gave us one more peak to add to our resume. If you decide to include the spur to Bighorn, the total mileage jumps to over 14 miles total. The elevation profile and map below show this additional mileage.

Ontario and Bighorn Peaks Trail Map

PRO TIP: I track all my hikes using GaiaGPS. It’s the best solution for staying on the right trail, it works even when you don’t have cell service, and there are versions for iOS and Android. The app is free, and you can get a discounted membership for maps here.

 

Tips & Tricks for Hiking Ontario Peak

  • Go early to get first dibs on parking. An Adventure Pass is required for parking.
  • There is a restroom at the parking lot area.
  • Mind your steps. Though Icehouse Canyon Trail is picturesque, the first 2 miles of the trail surface has uneven footing and a lot of loose rocks which can make it slippery.
  • Bring sun protection. Once above the tree line, you are fully exposed to the sun.
  • Carry at least 3 liters of hydration. There are springs along the trail, it will need to be filtered and Kelly Camp spring is unreliable.
  • If you’re camping overnight at Kelly Camp, you will share it many others, especially on weekends.

Ontario Peak Weather Forecast

The location could not be found.

 

Six-Pack of Peaks Ambassador CeCe atop Ontario Peak

Originally hiked on January 6, 2018 with Hike Beyond the Hills.

Related

Filed Under: Hiking News Tagged With: Bighorn Peak, dog-friendly, hiking, Ontario Peak, peakbagging, Six-Pack of Peaks, strenuous

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CeCe L

About CeCe Lorthioir

In 2015, CeCe spontaneously organized a group of five to hike Mt. Baldy. That hike started Hike Beyond the Hills, which today has over 500 members. Since then, CeCe has lead yearly group hikes to successfully complete the Six-Pack of Peaks Challenge. Her mission as a hike leader is to build a community of responsible hikers who prioritize safety.

Comments

  1. Dennis says

    February 26, 2018 at 12:51 pm

    Cece the images you have provided of the Ontario Creek are nothing short of amazing and will attract the eyes of any hiker. These images will inspire hikers to bring their own cameras to take pictures of their own journey to the peak to show friends and family. Hikers should look into buying an SSD to not only show friends and family their journey, but to also back up the image files so the images are never lost. I am just getting into hiking so reading and seeing the journey has definitely inspired me to continue with this new hobby.

    Reply
  2. Realest Nature says

    February 28, 2018 at 9:22 am

    Wow, that looks like a great hike! Thanks for the info!

    Reply
  3. Paul says

    October 31, 2020 at 10:55 am

    The perfect late-fall hike, with the best vistas of all the Ice House trails, including Baldy. The toughest part is the long slug to the saddle. Above that, very few other hikers and the climb to Ontario is modest and very pleasant. A few hiking sites mention “quickly” taking the spur to Bighorn, which is on the same ridge. But just be aware that it’s easy to lose the trail in the manzanita and it’s much steeper and looser than it looks from the junction! Definitely doable, just give yourself time and be prepared if you take Ontario first.

    Reply

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About Jeff Hester

I created SoCal Hiker while preparing to thru-hike the John Muir Trail. My goal? Create guides for the best hiking trails throughout Southern California--and occasionally beyond. I personally hike each trail to create these guides, sharing practical advice on gear and outdoor skills. Read more...

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