Running Down Diablo

Running the North Peak Trail on Mt. Diablo

More often than not when you run down a mountain, you’ve also had to climb up it. Not so today. Today our Mt. Diablo run started on the summit of Mt. Diablo (3849′), worked over to North Peak (3557′), and then descended the Bald Ridge, Eagle Peak and Mitchell Rock Trails to the trailhead at the Mitchell Canyon Interpretive Center and Ranger Station.

I was more than happy to save the ascent of Mt. Diablo for another day. With the AC100 just a couple months away my mileage has been on the increase. Yesterday, after driving up to San Francisco, Brett had taken me on a run on Mt. Tamalpais. Earlier today I’d done a run to Fort Point and this afternoon would be doing another run when we returned to the city.

Except for an astoundingly steep and slippery section of service road between Prospector’s Gap and North Peak, today’s run was nearly all single track trail. Not the “cruise downhill, don’t have to think about it” kind of single track, but technically interesting single track that tries hard to find a way to trip you up and knock you down.

Mount Diablo fairy lantern
Mount Diablo fairy lantern

One of the reasons for doing Diablo was to see if we could find the rare and endangered Mount Diablo fairy lantern (Calochortus pulchellus). There were a surprising number (50-100) of the yellow flowers along the North Peak and Bald Ridge Trails. It might be assumed that this was due to the area being burned in the September 2013 Morgan Fire, however there appeared to be as many instances of the plant outside the burn area as inside. I think there is another explanation.

The unusual pattern of rainfall that we experienced this rain season in Southern California was replicated across much of the state, including the Bay Area. As of February 1 San Francisco Airport (KSFO) had recorded only 1.5 inches of rain since July 1 and storms in February and early March accounted for a large part of this season’s rainfall.

This pattern of rainfall, sun and temperature appears to have favored wild lilies, particularly mariposa lilies of the genus Calochortus, such as the Mt. Diablo fairy lantern. The butterfly mariposa (Calochortus venustus) was very widespread on Mt. Diablo, numbering in the thousands. It appears to fill a similar ecological niche as the Catalina mariposa (Calochortus catalinae) in the Santa Monica Mountains. The Catalina mariposa was also very abundant this year, along with some other members of the Lily family.

Here are a few photos from the Diablo run.

Coastal Trail Runs and Pacific Coast Trail Runs offer trail running events that start and finish at the Mitchell Canyon Trailhead on Mt. Diablo. Brazen Racing also organizes the Diablo Trails Challenge.

For more information about Mt. Diablo see the Mt. Diablo State Park, Save Mount Diablo and Mount Diablo Interpretive Association web sites. This State Park brochure includes a trail map.

Related post: Diablo Trails Challenge 50K 2018

Tamalpais Trail Run

Running ahead of me at a brisk pace, Brett suddenly stopped and turned, gesturing for me to slow and be quiet. On the shaded trail ahead I could see something large and brown hunched over on the trail. It took a moment to realize that it was a big male turkey in full regalia.

We were on Mt. Tamalpais, and about a half-mile into an afternoon run from the Bootjack parking area in Mt. Tamalpais State Park. This scenic loop was the first of several runs over a too-short Bay area weekend visit. One of the innumerable loops and variations in and near the Park, our route included segments of the Old Mine, Rock Spring and Matt Davis Trails.

According to this November 2012 article in the Marin Independent Journal the turkeys were introduced into Marin County in 1988 by Fish & Game to provide hunting opportunities on private land. They have since become a nuisance and usurp resources from native species. During the birds’ mating season they have reportedly frightened hikers and bikers. (I might have scoffed at that statement before seeing the size of this tom.)

It was a warm in the sun, cool in the shade afternoon with the temperature in the mid-70s. Earlier in the week an offshore flow had pushed temperatures in the Bay area well into the 90s. The heatwave produced numerous record highs, with the temperature at San Francisco Airport reaching over 90 degrees on Tuesday and Wednesday. The remote automated weather station (RAWS) on Middle Peak can be used to get an idea of the weather on Mt. Tam.

Today the winds were onshore, but the visibility was still very good. The twin summits of Mt. Diablo could be clearly seen across the bay, about 40 miles away. Mt. Diablo would be the site of one of tomorrow’s runs. Rumor had it the rare Mt. Diablo fairy lantern was blooming, and Brett had planned a run on Diablo that included North Peak, Bald Ridge and Eagle Peak.

Here are a few photos from today’s run on Mt. Tam. More info can be found on the Mt. Tamalpais State Park and the Friends of Mt. Tam web sites. This State Park brochure includes a trail map.

Trippet Ranch Wildflower Run

Symmetry of mariposa lily

For most of the Winter it looked like there would be very few wildflowers this Spring in the Santa Monica Mountains. The drought had taken its toll, and many chaparral plants were in survival mode. Most were desiccated, some were diseased and a few were dying. Winter-bloomers such as wishbone bush, prickly phlox, shooting star, big berry manzanita and big pod Ceanothus were practically nonexistent.

Then it rained. From February 26 to March 2 many areas of Southern California recorded more than four inches of rain. Los Angeles had the most rain over five days since 2010. Although the rain didn’t end the drought, it did end one of the driest periods in 100 years, and brought crucial relief to the plants and animals.

The response to the rain was virtually immediate and has continued throughout the Spring. The rain resuscitated the vegetation and wildlife and revived habitats. Now, when you run, hike or ride a trail in the Santa Monica Mountains, if you don’t look too closely, the growth and flowering of plants in the chaparral appears to be almost normal.

Rainfall in the area has been only about 40% of normal, but in a few cases plants have responded as if the rain season had been much wetter. Plants fill more than geographical niches in an ecosystem. They fill sub-seasonal niches of rainfall, temperature, sunlight and other parameters. If rainfall occurs at an optimum time or in an optimum pattern for a plant, its benefits can be amplified. The large number of Catalina mariposa lily and wild hyacinth blooming this Spring demonstrate this effect. The growth of non-native black mustard is also more robust and widespread than might have been expected.

Here’s a slideshow of some of the wildflowers currently blooming in the Topanga State Park area of the Santa Monica Mountains. All of the photographs are from this morning’s 12-something mile loop to Trippet Ranch from the “end of Reseda” at Marvin Braude Mulholland Gateway Park.

Some related posts: Garapito Trail Runs, The Heavenly Ranch in the Hills