Past Meetup

Allison Saddle of Iron Mountain via Heaton Flat

This Meetup is past

27 people went





Organizer: Mike Cheng

Nature Lovers:

Lead: Ledy

Start time: 7:30 am

Hikers: Brad Barton, Monica E, Yoon Mi, Mayra, Suraiya, Amy, Arlette, Romyleen, Gandhi, Irene, Grace, Dalia, Lee Adams, Renee, Cheryl

Fast Hikers:

Lead: Mike Cheng

Start time: 8:00 am

Hikers: the rest of the group

Location: Azusa, CA

Hike difficulty: Level 8/10

Distance: 9 miles

Elevation gain: 3600'

Moving pace: 2.2 mph

Time: 6 hours

Trail condition: mostly single file trail, no shade

Water: Minimum 3 liters (If you bring less than this amount, you will be in big trouble.)

Guest: no

Dog: no

Toilette: At trailhead

Adventure Pass: Parking lot - yes

Street parking - no


What to bring: hat, long pants, sunscreen, energy bar, lunch, snacks, water, hiking poles, hiking shoes and the usual stuff.

Direction: From the 210 freeway exit at Azusa Avenue (Highway 39) and head north for 10 miles or so. Azusa Avenue becomes San Gabriel Canyon Road and parallels the San Gabriel Dam on the right. Turn right on East Fork Road and continue for another 8 miles until the road dead ends at the East Fork Ranger Station. Park in the lot or beside the road below the ranger station.

Parking: Public and street parking near the trail head. Adventure Pass is required. If parking is full near the trail head, you can park at the Oaks Picnic Area and hitchhike to the trail head. It is only 1 1/2 mile south of the trail head.

Carpool: Please sign up here (


Trail description:

Half of this hike will be along the ridge line. Some short sections of the trail are steep (50-60% grade), sandy and slippery. However, these slippery sections are generally short, less than 20 yards. There is no shade on this trail.

If your legs are not strong enough, one slip could mean serious injury. If you should slip along the ridge line, you could fall 1,000' to your demise.

Serious injury has happened on this hike before. You need to think twice before signing up.

If your pace is slower, there is a high likelihood that you will not reach the saddle before we turn around. Therefore, you must take your pace into consideration.

Unless you are a strong and experienced hiker, I strongly recommend that you use hiking poles.


Some sections of the Heaton Flat trail are very steep. These sections are usually short, less than 20 yds, but they could have a 50 % grade with a sandy base.


Venue Overview:

According to John Robinson, author of Trails of the Angeles, "8007 foot Iron Mountain is by far the least accessible peak in the San Gabriels....No trail approaches its isolated summit , and to climb it you must start miles away and thousands of feet below." In this local hiking legend's view, "Big Iron" is the most strenuous one-summit hike in the entire San Gabriel range.

Originally, local miners in San Gabriel Canyon referred to the mountain as Sheep Mountain, descriptive of the herds of Bighorn sheep that once roamed its slopes. However, the U.S. Geological Survey, which mapped the San Gabriel Mountains in the 1890's, was apparently not as impressed with the fauna that roamed the surface of the mountain as it was with what lay beneath the surface, iron ore deposits. Thus the present name was bestowed. But the Bighorn were not entirely forgotten for the designated wilderness area where Big Iron is located is named "Sheep Mountain Wilderness."


Our Policy:

Profile photo: Anyone interested in joining US Hiking must have a profile photo showing his/her face. This is a requirement of our group. Without it, you will not be allowed to sign up for an event.

Waiting list priority: People who hike with with US Hiking regularly will be given priority when they are on the waiting list.

Advanced hikes: Anyone interested in participating in advanced hikes (>3,000' elevation gain or distance > 10 miles or Difficulty Level > = 7) will be subject to prescreening before his/her name will be added to the list. Therefore, interested hiker must share with the event host his/her recent hiking background to establish proficiency before his/her name will be added to the list. Guests are not allowed on advanced hikes.

Early departure: If a hiker needs to be separated from the group for any reason, he/she must inform the event host. Not knowing a hiker's where about may prompt the event host to report a hiker's missing to proper authority for further actions.

No show: If you sign up for an event but did not show up, you will be removed from the next event you sign up.

No minor: Meetup user agreement can not be agreed to by a minor. Therefore, you and your guest must be over 18 to participate in our events.



If you have prior medical condition or a family history of illnesses pertaining to heart, lungs, brain, etc. that can be aggravated by heat and physical exertion, this is not the hike for you.

If you have never done a hike of this distance or difficulty before, this hike will be very difficult for you. It may well be your death march. The mountain is not going anywhere. We will schedule this event again in the future. Do it when your mind and body are ready.

Hiking is a recreation, not a suicide mission.

Release of Liability:

The organizer (me) of this trip is a volunteer and is not a professional guide. The function of the organizer is only to organize this trip. Each person who signs up for a trip/hike/or outing is responsible for his or her own safety and the safety of his or her guests.

By signing up for this trip, or any other event organized by me, you are acknowledging that you are aware and have made your guests aware of the risks, dangers and hazards associated with any outdoor activity and freely accept and fully assume all such risks, dangers and hazards, and further agree to release and discharge the organizer (me) of this hike from and against any and all liability arising from your and your guest's participation in the group activities.

US Hiking, its organizer, assistant organizers, event organizers are not responsible for any injuries or accidents that may occur carpooling to and from this event, or for any injuries or accidents incurred before, during, and after this event. If you sign up or participate in an event you acknowledge that you freely and voluntarily agree to assume all risks of injuries and damages arising from, as a result of and associated with this event.

In addition, you and your guests are acknowledging that you agree to the Meetup terms of service especially paragraph 6.2:

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