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Clyma, Highland Ridge and Raven Loop is a 8.4 mile moderately trafficked loop trail located near Brentwood, California that offers the chance to see wildlife and is rated as difficult. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

Length 8.4 mi Elevation gain 2,066 ft Route type Loop

Dogs on leash

Hiking

Horseback riding

Mountain biking

Bird watching

Running

Views

Wildlife

Description
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Getting There

Morgan Territory is named for Jeremiah Morgan a former gold miner who started ranching the area in 1857. Morgan Territory is located within the traditional homeland of the Volvon, one of five Native American nations in the Diablo area who spoke dialects of the Bay Miwok language. Today, the sandstone hills within the park’s 4,708 acres are seasonally adorned with more than 90 species of wildflowers, including the endemic Diablo Sunflower. Deer, coyote and even the elusive mountain lion may be seen here, and a variety of raptors frequently soar overhead. This trail begins in a heavily shaded, narrow wooded canyon and then passes through rolling hills and an old orchard. Raven Trail leads you to the top of the hill where you can see Mt. Diablo to the west, Mount St. Helena to the north, and the Delta, Central Valley, and the Sierra to the east. Take a moment at the top of Raven Trail to look around and take in the beautiful panoramic views. This trail is a very steep climb and there isn’t water available on the trails, so be sure to bring plenty. Ample parking, restrooms and water fountains are available at the Morgan Territory Road staging area. Park at the Morgan Territory Road staging area and walk towards the street-side of the parking lot. Near the park residence, there will be a sign for Clyma Trail. Follow the trail, crossing Morgan Territory Road. Go through the gate and across the small wooden footbridge. Stay on Clyma Trail for the next two miles. At the fork, make a left onto Highland Ridge and head uphill. At the next trail post, turn right onto the Raven Trail and at the next fork in the trail stay on the higher path, continuing on Raven Trail. At the next fork, turn left, in a switchback, remaining on Raven Trail. Follow Raven Trail steeply to the top of the hill. At the top of the hill turn left on Highland Ridge Trail. Take Highland Ridge Trail all the way down the hill. Keep following Highland Trail and turn right onto Clyma Trail. Clyma Trail will take you back to the staging area.

Park Hours: Dawn to dusk Fees: No fees Website: ebparks.org/parks/morgan

Driving Directions: From I-580 in Livermore, exit onto North Livermore Ave. and turn north. Shortly after North Livermore curves left (west), turn right onto Morgan Territory Rd. and follow it for about 5.5 miles to the staging area. From Walnut Creek/Concord, take Clayton Rd. to Marsh Creek Rd., then turn right onto Morgan Territory Rd. The staging area is 9.4 miles from Marsh Creek Rd.

Weather
UV Index
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Reviews (65)
Photos (377)
Recordings (63)
Completed (103)
Blue Sky
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSun Jun 28 2020
Hiking

Really nice trail with great views. Lots of solitude even on a Sunday afternoon.

Mimi Ngugi
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarSun Jun 14 2020
HikingNo shade

This hike was just straight up DIFFICULT. Raven loop is no joke but nevertheless it was totally worth it!

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Darrin Tinsley
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSun Jun 14 2020
Hiking

trail is about 60/40 exposed to shade start early. there were loads of deer and birds in the woods. no water and very dry. the campground was over grown and there was a very large spider in the out house. it us fenced and suitable for stock. great views of Mt Diablo all the way to Mt. Vaca in June you can probably see the Sierras on a clear winter day

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Lauren Freedman
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSun Jun 07 2020
Hiking

Clear views! Saw a deer!

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Sophie Rosenberg
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSun May 03 2020
Hiking

Nice trail with many rolling hill climbs. Good workout! Quiet, low key but with a nice view at some spots. There are still some wild flowers along the way.

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Jesse Gandt
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarTue Apr 28 2020
Hiking

This is one of the best paced trails in the east bay. No monstrously steep incline or declines, but still has enough consistent elevation gain/loss to keep your heart rate up. Something else that really stands out about this is the location. At any point of the trail, no man-made sounds can be heard (freeways, planes, trains, construction) which was very refreshing. I only saw 1 person on the trail the entire time. Lots of wildlife as well, a hawk with a snake in its clutches flew in front of me, and there were deer on a couple points of the trail. Lots of other trails to explore as well, definitely coming back soon.

Walnut Creek Man
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSat Feb 15 2020
Hiking

Peacefull trail. No one here. Lots of hills.

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Sasha Strambler
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarTue Jan 07 2020
WalkingMuddy

Was definitely not the best trail I hiked but it was a challenge. Definitely wouldn’t consider it hard more moderate . a lot of cows on the walking trail had to make detours a few times . Took me 3 and a half hours to finish

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Erika Jane Moradian
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarSun Jan 05 2020
MuddyOver grownRocky

a bit over grown with little trail markers, this trail is beautiful and worth the adventure. mostly shaded. very pleasant riparian forest. kids loved it! it does get narrow a bit. so hold on to your little tikes!

sagar rathod
Yellow StarYellow StarGray StarGray StarGray StarGray StarGray StarGray StarGray StarGray StarSat Jul 27 2019
HikingNo shade
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Terri Beam
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarWed Jun 26 2019
Hiking

My recording of this is more like 9 miles. Great views of Mt. Diablo and surrounding areas. Thank goodness for the wind and the breeze-and we went on a pretty mild summer day starting at 8:45. Great hike for getting in shape for summits and such. Probably would be prettier in spring.

Matthew Ready
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarSat Mar 16 2019
Hiking

This is about as "wilderness" as it gets in the Tri-Valley area. Morgan Territory is very isolated and pristine and a great place to escape for a day of hiking. The Clyma/Highland Ridge/Raven loop is a great hike to take in the views and seclusion of the area. Starting from the staging area, you traverse up and down through the riparian creek areas, rolling hills, and oak woodlands. The Clyma stretch is decent view-wise but the best parts of the hike are connecting to the Raven trail and climbing up to the Highland Ridge trail. The views of Mt Diablo are stunning as well as the views across the Central Valley. I am in good shape and this hike took me roughly 3 hours, so make sure you allot plenty of time and pack at least 2 liters of water. Some of the reviews call out the bad shape of the trail. This is true, the trail is quite torn up by cattle and rain. Make sure to wear proper hiking boots, to keep dry (the trail can get muddy) and prevent turning an ankle. It is not as difficult to navigate as some reviews mention. There are maps at the staging area. This would be best to visit in the late winter/early spring before it gets too hot, but don't do it within a week after the last rain, as the trail remains muddy for a long time.

J Capp
Yellow StarYellow StarGray StarGray StarGray StarGray StarGray StarGray StarGray StarGray StarWed Feb 27 2019

This was the worst trail I’ve ever been on. Rains have both washed the trails out/promoted new grass growth over them. Poorly marked by the park itself and no markers left by other hikers. I started my hike with 70% battery on my phone and the trail got so confusing because there are so many different trails/offshoots from the main trail, I had to keep using the map on all trails to even have a chance at staying on course and even then, I still got lost! I’m not a novice hiker either. I ended up draining my battery because of this and by then it was dark and I still had a mile and a half to go. Had to scramble up the highest hill I could find with the last bit of daylight and was able to spot the lone light in the Morgan Terr. parking lot, so I walked towards the light and used my compass, alternately climbing over and under barbed wire. That was fun. Not. Never been so relieved to see my car. What shoulda been an 8.4-ish mile hike turned into 12.2 (mostly uphill). will not be returning to MTP ever again. Even without that mishap, the mud and ugly look of the hills wasn’t worth it, although the view at the top was kinda nice. Still not worth it! Most of this isn’t shaded either, so it’s better to do this in cooler weather. Would not recommend tho.

Subbu V
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSat Dec 29 2018
Hiking

the trail was very slushy due to recent rains. the early part of the trail is mostly shaded. the cattle roam around the trails and can sometime seem threatening but mostly they go about their business. we went at around 8am, the time Gates for the parking opens and went around the trail in about 4 hours. it's moderate trail except for the Ravens trail which can be steep if you go counter clockwise. the view from the top of Highland Ridge is amazing. you can see all across the Central valley and we were lucky to see all the way to the snow clad Sierra hills. on the other side you have a great view of the same Ramon valley and beyond. overall a good hike in the cooler time if the year. summer can be brutal as expected in the East Bay trails.

David Gates
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarThu Oct 25 2018

Pretty nice hike. The last 2 miles up the Raven trail were tough (16-20%) grade, but the 360 deg. view at the top was incredible. Saw some mule deer.

Don Heston
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarWed Sep 19 2018

Great hike, amazing old groves of blue, valley and live oaks. Tons of deer, a striped skunk and even a feral pig (scary). Crystal clear view of Mt. Diablo.

Earl Bell
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarMon Aug 27 2018
Hiking

it was a good hike, but I'd like to go when it's green during the fall

Sean Lorimor
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarWed Jul 04 2018
Hiking

Good hike, some pretty steep parts. Lots of poison oak but the trail is wide. Saw 2 deer, no cows on trail. Pretty windy, only ~70 F. No biting bugs, tons of dragonflies, a couple velvet ants.

Jim F
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarMon Apr 23 2018
Hiking

Hike is a beast - disregard my recording (GPS wasnt working). Plenty of parking, Signs say trail damage but didn't see any. 70% trail is exposed - First 3.5 miles are great as you go down - Raven is tough going up but has some amazing views. A little buggy but not too bad

Nitin Jain
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarSat Jul 04 2020
Hiking
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Sateesh Varma
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSat Jul 04 2020
Hiking
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Adrian Pimentel
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarFri Jul 03 2020
Hiking
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benny le
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarThu Jun 18 2020
Hiking
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Adam Sowul
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarSat Jun 13 2020
Hiking
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Senghak Tang
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSat Jun 13 2020
Hiking
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Paul Campagna
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarFri May 29 2020
Hiking
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Kristin Croteau
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarGray StarGray StarSun May 24 2020
Hiking
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Don Higgins
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarFri May 22 2020
Hiking
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