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Morgan Hill, California, United States

Mount Sizer Loop: Henry Coe State Park

Strenuous 15-mile hike captures the wild essence of Henry W. Coe State Park, southeast of San Jose, California.

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Difficulty: Difficult
Length: 15.6 miles / 25 km
Duration: Full day
 
Overview: This is Henry Coe the hard way: 15 miles with over 4,000 feet of ascent and a chance to test your legs on the "Short Cut" -- consensus pick as the San Francisco Bay Area's toughest trail.

Henry W. Coe State Park sprawls over more than 87,000 acres of high ridges and low valleys southeast of San Jose. It once belonged to a rancher named Henry Willard Coe; his heirs donated the ranch that would become the state park bearing his name.

The park has few amenities, but has abundant trails for hikers, equestrians and mountain bikers. The hike to Mount Sizer goes deep into the heart of the park, where the views from the heights seem to go on forever (occasionally the snow-capped peaks of the Sierra are visible on clear winter days).

To hike into this remote country is to see it as it stood for thousands of years before the first European settlers arrived. Some of the hills are scarred by wildfires of recent vintage, but the sight of green reclaiming the blackened landscape can't help but cheer you up.

Make no mistake: this is a very tough trek and you'll need all the cheer you can get.


Tips: Pay for parking at the park headquarters before you start out ($8 as of July 2010).

Mind your water supply -- you'll go through much more water than you might think in the course of several long, steep climbs.

Best time to go: March through April, when the hills are green and wildflowers are out in abundance.

Worst time to go: Late summer, when the searing sun makes the ascents unbearable and dries out the creeks, sharply limiting your water options.

Winter can be rainy and muddy, with precarious creek crossings. The vistas from the high ridges, however, are the best of the year.

Many hikers like to go in October, which is mating season for the large, hairy tarantulas that are unseen residents of the park most of the year.

Watch for poison oak along narrow trails.

Ticks will try to hop a ride, especially if you stop long in areas of tall grass (they're worst in winter and spring.) Always do a tick check after a Henry Coe hike.

What to bring:
Park map, available at the park HQ.
Clothing in layers: It can be breezy on the ridges, cool in the shade, hot in the sun.
Sunscreen: much of this hike is unshaded.
Snacks and enough water for eight to 10 hours of strenuous hiking.

Points of Interest

Parking
map

Dunne Avenue Headquarters

Follow the signs to Manzanita Point Road, a somewhat steep paved road northwest of the Park Headquarters. Turn onto Manzanita Point Road.

The road passes a park staff residence on the right, then turns into a gravel road. Stay on Manzanita Point Road for just over a half mile.
map

Hobbs Road

Bear left at the Y, which begins Hobbs Road -- You'll stay on this road for several miles.

Hobbs Road climbs steeply, the first of many on this hike. Excellent views of the nearby mountains open up as you climb.
map

Coe Monument

After about .4 of a mile, a bas relief monument to Henry Willard Coe, for whom the park is named, appears on your right.

Coe, a rancher who grew up on this land, died in 1943, leaving the land to his son, Henry Sutcliffe Coe, who in turn sold it in 1948 to a land company that created the network of roads now passing through the park.

Henry W. Coe's daughter, Sada Sutcliffe Coe, bought the ranch back in 1950, and donated it to Santa Clara County in 1953. In 1958 the land became part of the California state parks system.
Restroom
map

Privy near Frog Lake

Hobbs Road descends sharply after the Coe Monument, crossing a creek and climbing again to a ridge overlooking Frog Lake.

Take a potty stop at the privy over on the right if the urge hits.

After the privy, Hobbs Road climbs for about a half-mile, then begins a 2-mile descent to the Middle Fork of Coyote Creek.

Note: this crossing can be treacherous in winter through early spring.
map

Creek Crossing, bottom of the Short Cut

Rest up a few minutes for this climb, it's a doozy: 1,400 feet of ascent in 1.4 miles.

This is the infamous Short Cut -- mention Henry Coe to veteran Bay Area hikers and some will inevitably ask, "Have you done the Short Cut?" Being able to answer "yes" is a point of significant pride.

Why is it called "The Short Cut"? Because this old road was the most direct route to the remote lands on the far side of Henry Coe State Park -- driving there on paved roads took hours longer.
map

Blue Ridge Road

Once you've conquered the Short Cut, turn right at Blue Ridge Road and rest up on the old bench.

The hike along Blue Ridge Road climbs gently compared to Hobbs Road. The vistas along this section are amazing.
map

Mount Sizer

Mount Sizer isn't much of a mountain -- it's really just the high point along Blue Ridge. A spur trail to the high point appears on the left after about a mile.

It's worth a stop, however, to soak in the views.

Once you get back on Blue Ridge Road, continue downhill for about two miles.
map

Jackass Trail

Blue Ridge Road takes a sharp westward bend, and Jackass Trail shows up on the right after about .2 mile.

Jackass Trail is a narrow singletrack -- often overgrown in places -- tracking a ridge that suffered significant burn damage in a wildfire in 2007. The recovery from the fire damage has created one of the most starkly beautiful places in the park.

Jackass Trail goes southward for about 1.4 miles, intersecting with Poverty Flat Road.
map

Poverty Flat Road

Turn right on Poverty Flat Road, which starts as a gentle descent, then dives steeply down to the Poverty Flat campground area.
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Poverty Flat, Privy

The descent levels off at Poverty Flat, which has a privy over to the right of the trail and several campsites on the left.

Coyote Creek offers a chance to soak your feet and restore your water supply (make sure you purify drinking water you take from the creek).
map

Coyote Creek Crossing

Here you revisit the Middle Fork of the Coyote Creek, last seen at the foot of the Short Cut.

Cross the creek (you'll probably have to take your shoes off, depending on the water level) and begin the last steep climb of this hike -- 1,000 feet in 1.7 miles to the crossing at Manzanita Point Road.
map

Manzanita Point Road junction

From here you could just turn right on Manzanita Point Road and follow it all the way back to the park headquarters.

A much more relaxing and scenic option is to cross the road and take the Springs Trail, a pretty single-track that goes most of the way back to the HQ.

Wildlife sightings are common on the Springs Trail -- deer, turkeys, coyotes, perhaps even a bobcat.
map

Corral Trail

After about a mile, Springs Trail intersects with at the Corral Trail. Turn right on Corral Trail and take it all the way to the parking lot.
Pictures in this guide taken by: tommangan, Vaudesir, steve2000, renderman47, navratil, lmertens, SJDave, joost
Reviews
JMT2017
I've made it a point to find the cruelest and punishing hikes in the Bay Area and this one tops the list. Mt Sizer is a great tune-up hike for week-long backpack trips in the Sierras and a true test of your will and stamina. And now that I'm more familiar with the many evil and unbelievably steep switchbacks up "the shortcut" and the last punishing "climb out of Poverty" , they no longer intimidate me. But I do respect them and the many other steep hikes in Henry Coe. And since its good to "share", I look forward to hearing my friends swearing a blue streak at me on their first attempt at this hike.
Visited on Apr 05, 2013

by JMT2017 on Apr 05, 2013
Rage
Thanks for the guide - we knocked this out in 8 hours - creek was dry and we battled mosquitos (Oct). A great hike - very strenuous. Did The Shortcut in my age so it felt very rewarding.
Visited on Oct 11, 2011

by Rage on Oct 12, 2011

Mount Sizer Loop: Henry Coe State Park Trail Map


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About the Author

tommangan
tommangan
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