Category Archives: san gabriel mountains

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The Ups and Downs of the Angeles Crest 100 Mile Run

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Pacific Crest Trail on Mt. Baden-Powell

First published on June 30, 2015. Updated May19, 2023.

July 29th will mark the 34th time runners from near and far gather in a small parking lot in Wrightwood, California, to start the Angeles Crest 100 Mile Endurance Run (AC100). Begun in 1986, the AC100 is one of the original five 100-mile U.S. endurance races. It has endured fires, floods, the Covid-19 pandemic, and changing trail restrictions.

There’s a tradition of running grueling endurance races in the San Gabriel Mountains. The Big Pines Trail Marathon was one of the first organized mountain ultramarathons in the U.S. First run in August 1934, its course used some of the same trails that AC100 runners enjoy today.

The AC100 is not like a road marathon. It is an entirely different kind of running event and an entirely different kind of running experience. In 2023 the L.A. Marathon had about 22,000 participants. About 1/100th of that number — around 250 runners — are expected to start the AC100.

Sunrise from Blue Ridge during the 2015 Angeles Crest 100.
Sunrise from Blue Ridge during the 2015 AC100.

For many, one of the primary reasons for running the AC100 is to be fully immersed in the beauty and majesty of the San Gabriel Mountains. Runners start at 5:00 a.m., ascend the Acorn Trail, and as the sun rises, find themselves above 8000′, reveling in the spectacular views from Blue Ridge.

Even at this early stage of the race, the field is already becoming dispersed. By the time runners reach the first checkpoint, nine miles into the run, there is an hour spread between the first and last runners. Unlike a road marathon, much of the time a runner in the AC100 will be alone.

This year’s course returns to a point-to-point format, ending in Altadena. Because of damage to the Chantry Flat area by the Bobcat Fire, runners will bypass Chantry and ascend Mt. Wilson via the Kenyon-Devore Trail, returning to the traditional course at the Mt. Wilson Toll Road above Idlehour.

As a result of this Winter’s frequent storms, many trails have been damaged or blocked by trees and debris. Ultrarunners not only spend many hours enjoying the trails in our local mountains but also do hours of trailwork that helps keep trails open and in usable condition.

Once again this year, some long stretches of the AC100 course will be run on Angeles Crest Highway. As was done for the Western State 100 Mile course, AC100 organizers have been trying to obtain an exception to use trails historically included in the event. You can help get runners off the highway and back on the trail — for more information, see the Save the AC100 page on the AC100 website.

The elevation profile for the 2023 AC100 course (PDF) was created in SportTracks from the GPX file on the AC100 website. The elevation profile was corrected using 3DEP 1-meter Lidar-based DEMs. A conservative elevation data smoothing setting was used, resulting in an estimated cumulative gain of about 18,115′ and loss of 22,775′. The actual gain and loss are probably a bit more. Placemark locations, mileages, and elevation gains and losses are approximate.

Estimated Angeles Crest 100 Mile Elevation Profile (link)
Click to view/download PDF of the elevation profile.

In addition, here is an interactive, 3D terrain map of the 2023 Angeles Crest 100 Mile Race. It is based on the course GPX file downloaded from the AC100 website. The map is initially zoomed in on the climb up Mt. Baden-Powell. To change the view, use the control on the upper right side of the screen. Track and placename locations are approximate and subject to errors.

Click to view 2023 AC100 course with photographic 3D terrain.
Click to view 2023 AC100 course with photographic 3D terrain.

See the AC100 website for official information and details.

climbing, landscape, mountaineering, photography, running|adventures, san gabriel mountains, trails

Strawberry Peak Summit Loop – Spring 2023 Update

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The northwest ridge of Strawberry Peak just before the Class 2-3 rock climbing segment.
The northwest ridge of Strawberry Peak just before the Class 2-3 rock climbing segment.

Usually, I prefer to start the Strawberry Peak Summit Loop at the Colby Canyon Trailhead on Angeles Crest Highway. But it had been a while since I’d done the loop from Clear Creek, and I was feeling a little nostalgic. One of the aid stations for the ANFTR/Mt. Disappointment race is at Clear Creek, and the course climbs Josephine Fire Road.

I was also curious how my time to Josephine Saddle using the fire road would compare to the direct route up the Colby Canyon Trail. As it turned out, at a moderate pace it was about the same either way.

Foliated rock along the use trail to the northwest ridge of Strawberry Peak
Foliated rock along the use trail to the northwest ridge of Strawberry Peak

The use trail up from Josephine Saddle was in decent condition. It looked like it may have recently had a snip here and there. Part way up the path, an outcrop on the ridgeline provides a good warmup for the climbing higher up. The circuitous path eventually ends at the base of the steep, jumbled northwest ridge of Strawberry Peak. I was surprised to find two small patches of snow here.

It’s difficult to describe the route on the ridge since there are many variations. It’s not fear-mongering to say that people get into trouble on this section. A common comment about this segment is, “Don’t climb anything sketchy or difficult.” But what is an easy scramble for one person may be nearly impossible for another. With 50+ years of rock climbing experience, I still remind myself not to climb up anything I’m not 100% sure I can climb down. If you don’t have “real” rock climbing experience, go with someone that knows the route.

Snow on the NW side of Strawberry Peak on April 30, 2023.
Small patches of snow on the NW side of Strawberry Peak on April 30, 2023.

Following a wet, snowy, cold Winter, I took extra care while climbing. Solid holds and blocks can sometimes be loosened over the Winter and fail unexpectedly. This morning, I didn’t notice any obvious changes on the route I climbed.

The setting changes dramatically on the east side of Strawberry Peak. You go from the cool shadows of a steep, rocky face with (typically) no one around to a sunny, sandy, busy summit and trail.

As I approached the summit, a couple of people were setting up to do a video for a vlog. Another person had just reached the top, and another hiker wasn’t far behind. With snow in the high country, Hwy 2 still closed at Red Box, and the Bobcat Fire Closure still in effect, the trail up Strawberry was a popular option. The question of the day from the people coming up was, “How many false summits are there?”

Looking across the canyon to the Gabrielino Trail below Red Box, and Supercloud Canyon
Looking across the canyon to the Gabrielino Trail below Red Box, and Supercloud Canyon

Overall, the Strawberry Peak Trail was in reasonable shape. The trail needed a little work in a few places, but as far as mountain trails go, its condition was about what you would expect. In several places, the trail was carpeted with the remnants of old yucca leaves. Very nice!

Just before reaching Red Box, I snapped a photo of the snow on Mt. Baldy. At Red Box, all but one parking space was taken, and that one was snagged by an arriving car.

As I started down the Gabrielino Trail from Red Box, LASD Air Rescue 5 began to orbit overhead. Apparently, there had been yet another vehicle accident on Angeles Crest Highway. It wasn’t long until I heard the whaling sound of sirens coming up the canyon.

Upper Arroyo Seco at Switzer's Picnic Area.
Upper Arroyo Seco at Switzer’s Picnic Area.

Some trailwork had been done on the upper half of Gabrielino Trail between Red Box and Switzer’s. Quite a few small trees and limbs had been removed from the trail, and the bushes trimmed. Most of the work (as of today) ended at mass of fallen trees halfway down the trail.

Upper Arroyo Seco was flowing. The sound of water plunging over the debris dams made the flow seem higher than it was. There were a couple of minor creek crossings.

Switzer’s was busy — as usual. To finish the loop, I walked up the stairs to the access road and hiked up to the start of Nature’s Canteen Trail. It was a bit overgrown, but I was back at Clear Creek in a few minutes.

Some related posts: Strawberry Peak Summit Loop; Plan B: Barley Flats; Strawberry Peak, Switzer’s and the Old Colby Trail

landscape, nature|wildflowers, photography, running, running|adventures, san gabriel mountains, trails, wildflowers

Condor Peak and Fox Mountain Adventure Run

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Condor Peak from Fox Mountain
Condor Peak from Fox Mountain

The out and back trail run to Condor Peak (5440’+) and Fox Mountain (5033′) from Vogel Flat is an adventurous 17-mile, lower elevation run in the San Gabriel Mountains.

Exposed stretch of the Condor Peak Trail
Exposed stretch of the Condor Peak Trail

When I last did this run (May 2020), portions of the trail below Fox Mountain were washed out and overgrown. Later I learned that this was before the Condor Trail restoration project had been completed. Thanks to the hard work of the Lowlifes Trail Crew the trail has been brought back to life. Today, several groups — including hikers, bikers, and runners — were making their way to Condor Peak.

Hazy view of snow on Mt. Waterman and Twin Peaks from the Condor Peak Trail.
Snow on Mt. Waterman and Twin Peaks from the Condor Peak Trail.

As mentioned in my posts from 2007 and 2020, this adventure is best done when the weather is cool. It can really bake on the south-facing sections of trail. From the Vogel Flat Trailhead on Big Tujunga Canyon Road the trail climbs about 2600′ in 6 miles to reach Fox Divide. Much of this stretch is surprisingly runnable. As with most mountain trails, extra care is required because of steep drop-offs and other hazards.

Today, the trail was in the best shape I’ve seen in years. The weather was relatively cool and good for running. As has been the case in other low elevation areas, a colorful assortment of Spring wildflowers were blooming along the trail. With our copious Winter rain, two small streams were crossed on the traverse above Fusier Canyon. It’s hard to say how long they will last.

USGS Lidar-based 3DEP 1m contour map of Condor Peak
USGS Lidar-based 3DEP 1m contour map of Condor Peak

Condor Peak has twin summits. A register and summit sign currently reside on the west peak, but USGS 3DEP 1-meter Lidar-based data suggests the west and east peaks have virtually identical elevations – about 5441′.

This time, after climbing Condor Peak, I also climbed Fox Mountain. Although steep, it’s short, and doing Fox only added about 30 minutes to the total time.

Here are a few photos taken along the way. Additional info, photos, and an interactive map with 3D terrain can be found in the following related posts.

Some relate posts: Condor Peak Out and Back Adventure Run, Condor Peak Trail Run

ahmanson ranch, los angeles, nature, nature|weather, photography, photography|landscape, running|adventures, san gabriel mountains, snow, southern california, trails, upper las virgenes canyon open space preserve, weather, weather, weather|la nina

Snow-Covered San Gabriel Mountains From Lasky Mesa

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Snow-covered San Gabriel Mountains from Lasky Mesa in Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch)

It had rained another inch overnight, and my shoes were soaked from the wet grass along the trail. Seeking some relief from the 20 mph northwest wind, I descended a single-track trail to an old paved road east of the ranch house on Lasky Mesa.

Motivated more by staying out of the wind than anything else, I did two sets of hill repeats on different sections of the road. Then, on tired legs, I jogged up to Lasky Mesa and was greeted by an Arctic blast. The temperature had dropped to the mid-40s, and the wind was blowing a steady 20 mph, gusting to around 30 mph. I didn’t need a wind chill chart to tell me the effective temperature was in the 30s.

I was so focused on dealing with the cold I wasn’t paying much attention to my surroundings. Deciding to do one more hill, I rounded a corner, and the brilliantly sunlit, snow-covered San Gabriel Mountains came into full view. It was just jaw-dropping!

Here is a wider view of most of the Front Range of the San Gabriels, white with snow.

Some related posts: Chasing Rainbows at Ahmanson Ranch, Looking for Snow on Topanga Lookout and Saddle Peak

adventures, landscape, los angeles, nature, nature|weather, photography, photography|landscape, running, running|adventures, san gabriel mountains, southern california, trails, weather, weather, weather|southern california

A Cool and Breezy Out and Back Trail Run from Islip Saddle to Mt. Baden-Powell

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Twin Peaks from the PCT near Islip Saddle
Twin Peaks from the PCT near Islip Saddle

After weeks of dealing with one heatwave after another it was a strange sensation. I was cold. I had on an extra shirt and sleeves, but the slopes of Mt. Islip were deep in shadow and the wind was gusting to 20 mph. The thermometer on my pack read 41 degrees, but the “feels like” temperature had to be in the 30s.

I was in the first mile of an out and back trail run from Islip Saddle to Mt. Baden-Powell. A San Gabriels classic, the route gains (and loses) about 3800′ over 16.5 miles on the PCT.

This morning I was doing the basic out and back, but Mt. Hawkins, Throop Peak and Mt. Burnham are easy peaks that can done along the way. Mt Islip is is a bit more of a detour, but can also be added to the route.

Mt. Baldy and environs from the PCT, between Mt. Hawkins and Throop Peak.
Mt. Baldy and environs from the PCT, between Mt. Hawkins and Throop Peak.

It’s also possible to start the out and back at the Windy Gap Trailhead (5836′) in the Crystal Lake Recreation Area. The distance to Baden-Powell is about the same, but the lower trailhead adds about 800′ of gain.

As I chugged up one of the initial steep sections, I thought about what it must have been like for this year’s participants in the AC100. This year, because the AC100 was an out and back from Wrightwood to Shortcut Saddle, runners got to do this tough segment after running more than 75 miles!

Here is an interactive, 3D terrain view of the out and back from Islip Saddle to Mt. Baden-Powell. The map can be zoomed, tilted, rotated, and panned using the navigation control on the right. Track and placename locations are approximate and subject to errors. Poor weather, and other conditions may make this route unsuitable for this activity.

Some related posts: Islip Saddle – Mt. Baden-Powell Out & Back, Mid January Trail Run from Islip Saddle to Mt. Baden-Powell, Savoring the Snow Between Islip Saddle and Mt. Baden-Powell, Little Jimmy Spring Incense Cedar,  San Gabriels High Five

adventures, landscape, nature, photography, photography|landscape, running, running|adventures, san gabriel mountains, trails, wildfire

Twin Peaks East, Plus Mt. Waterman

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Twin Peaks from low on the Twin Peaks Trail, following the Bobcat Fire

Seeing Twin Peaks while doing the Three Points Loop a couple of weeks ago reminded me that I hadn’t done Twin Peaks in quite a while. The last time had been in 2012, when I did a spur of the moment exploration down the southeast ridge of Twin Peaks, toward Triplet Rocks.

As long as I was in the neighborhood, I also wanted to do the short side trip to Mt. Waterman’s summit and see how it fared in the Bobcat Fire. (I’d skipped that side trip on the most recent Three Points Loop run.)

My general impression of Bobcat Fire impacts in the Mt. Waterman – Twin Peaks area is of varying severity. In some areas nearly all the trees were killed, while in other the trees are virtually untouched. Perhaps the most common scenario is a mix of burned, partially burned, and unburned trees.

Here is an interactive, 3D terrain version of the Bobcat Fire Soil Burn Severity Map that is zoomed in on Mt. Waterman – Twin Peaks area. The map can be zoomed, tilted, rotated, and panned. To change the view, use the control on the upper right side of the screen.

Overall, I was surprised to find that there were so few fallen trees on the Twin Peaks Trail. I think I had to step over one log, go around another, and a couple others had been cleared from the trail. The most serious obstacle was some Poodle-dog bush completely blocking the trail. Poodle-dog bush causes dermatitis in many people.

There was little damage from the heavy December storms. The elevation ranges from about 6540′ at the low point of the Twin Peaks Trail, up to 7761′ on Twin Peaks East, so much of the precipitation must have fallen as snow.

A couple of trees were burned on the perimeter of Twin Peaks East’s flat summit, but the tops of both Twin Peaks East and Mt. Waterman were pleasant places to be.

Here are a few photos taken along the way.

Some related posts: Three Points Loop Around Mt. Waterman, Toward Triplet Rocks, Twin Peaks Trail Run