Explore the most popular hiking trails near Mount Hamilton with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

trail running
3 months ago

If you don‘t like steep, make sure you do the loops clockwise, not counter-clockwise. Great views of Santa Clara Valley at mid-point.

beautiful today was an overcast winter day. Nice cause this is pretty exposed. We saw no one on the trail. We did see either a bobcat or mountain lion, not sure, too far away and too quick. We saw baby wild boar. We saw lots of wild turkeys. I think this trail would be easier if traveled in the reverse (clockwise) direction, then the uphill would be more gradual.

hiking
5 months ago

Cattle can be out in more than one section. I walked about 2 miles sometimes really close to anxious cows and it didn't feel good. I can't imagine dogs would help such a situation, leash or not.
I started from twin gates trailhead (no water, but there's a porta potty), that way it's a loop without repetition (don't have to go back to the main parking lot) and a bit less than 23 miles.
Pretty good hike, mostly serious up and down, level is less than half.

Beautiful hike. First 4 miles pretty steep but not too hard. Great views over the valley and Mount Hamilton.

Forgotten trail from a ways back

A peaceful and easy-to-moderate trail. The view is not as beautiful as Alum Rock in this season. But it is good option if you want to enjoy the trail only yourself.

Very little shade so will revisit and review during a cooler day.

Pretty, quiet, and not too exposed. But cow poop and flies everywhere. Trails weren't clearly marked and we passed by a few forks not even realizing it, so I highly recommend taking your GPS with you.

Hot and dry. Totally empty of other riders. Beware wild pigs. Second half is trickier than the profile shows.

hiking
Monday, May 01, 2017

April 2017 // A wonderful hike with sweeping views of the Bay Area. In the springtime, you are surrounded by lush rolling green hills and grand oak trees. Very pretty. To the southeast, the Lick Observatory sits on top of Mt. Hamilton and to the west, Silicon Valley stretches out before you. Bring binoculars.

FYI, Los Huecos trail is steep going up! Not a casual stroll. Lol ;D From Grant Lake, it's easier to go up Halls Valley trail if you're deciding between the two trails.

In warmer weather, start early as it gets hot in mid day and there's not much tree cover. And bring plenty of water.

Happy hiking!

hiking
Monday, April 03, 2017

trail running
Sunday, January 15, 2017

Very wet after recent rains. More of a service road than trail. Great views of the surrounding mountains.

hiking
Thursday, November 03, 2016

This is my go to hike in the winter. You will almost certainly be alone out here. It is steep and there are cattle. Trails are almost all dirt roads making it great for novice mt bikers. Avoid summer it is just too hot and dry.

hiking
Thursday, July 07, 2016

I parked near the second traffic circle, and then took a minor digression on the 0.3 paved circular loop (I think there used to be a sign at the fork but it doesn't say anything any more). The loop trail and I think the Bass Lake Trail were closed due to erosion, so I just did the southern part of the loop. I accidentally also went a chunk further south on Hotel Trail until I realized that I was definitely going south not north! Until that point there wasn't much elevation change. The views are much of a muchness throughout. Several birds of prey were circling overhead - I tried not to take it personally.

There is not much shade, so it's pretty warm in the middle of the day - take plenty of water. There's a $6 entrance fee for the park.

trail running
Monday, June 22, 2015

Last week we did the Rock N Roll Mud Run here at Joseph D Grant park. The race included some of the trails. The trails are quite the elevation gain! Be ready for lots of dust, and very few areas of shade. I think I would like to go back and do the trails as a normal hike.

Parking is $6.00

Sunday, December 28, 2014

Visited the park while out of town with my band and hiked up to a location called cave rock, one of the bridges was closed so we ended up taking a longer route but it ended up being about a four mile hike. The cave rocks were extremely cool and everyone in our group had a blast. Tons of wildlife, huge grassy plains, and tons of forested sections. Excellent hike.

hiking
Sunday, November 16, 2014

It was an ok trail for me. The trails had some wet spots that created cracks in the soil and some trails had too much stones in it. View was good. Elevation was great, +- 1100ft.

trail running
Monday, September 09, 2013

Participated in a race at this location over the weekend and must say I wouldn't return for a race. The trails were VERY thick with dirt. With everyone trying to run it created a huge dust cloud which made it hard to see and breathe. I think it would be an okay trail to run alone but they weren't any marking that I could see about where I was or which direction to go to get back to the parking lot. The elevation was nice which made the trail run a little harder. Although the race started early in the morning, the lack of shade cover on most of the trails coupled with no wind made it hot!

hiking
Saturday, August 31, 2013

Awesome trails and easy to hike. $6 entry fee per CAR and plenty of parking and easy to find your way around. No phone reception with Verizon or AT&T carrier, so we could not track our hike. Drive carefully to the hike, the roads are narrow and curvy.Bring plenty of water and get a map. We saw squirrels, deer, and horses there.

Saturday, April 28, 2012

Great Hike! More than 5.7 miles. We hiked 8.9 miles.

hiking
Sunday, August 15, 2010

Joseph D. Grant County Park sits in the hills east of San Jose. Although the valley and the mountains to the west are often covered in fog in the morning, the east hills are always sunny and get a lot less rain. The hills are covered with golden grass and dotted with trees so be prepared for a sunny hike, bring a hat or some sunscreen if you plan to be out long. The hike I went on took me from the lower parking lot up to the top of the ridge and then across and back down through one of the many trails that run through the park. There are many trails and if hiking up hills is not your thing, you could easily find a trail that remains fairly flat in the low lying area near the parking lot. As I hiked along I spotted deer, hawks, and lots of ground squirrels. Although I would say the hike was moderate in difficulty you really have to be ready for a tough hike thanks to the heat and the dusty conditions. Did I mention the east hills were rather dry? Even at 10 AM it was already near 80 degrees and with hardly any breeze even at the top. Also, be ready for a long uphill climb, if you head up you'll have to go 2 miles before you hit level ground again. I didn't have problems except with the heat as I went up, I just took my time and enjoyed the view as I went. The views are great, at the top you can see the valley and parts of San Jose as well as the fog hovering over Monterey Bay in the distance. A great thing about the park is that on the two occasions I've been here there has not been anyone else. Not a single soul. If you hate crowds this park is great! But don't bring your iPod and tune the world out, this is mountain lion country and although I've never heard of any attacks its better to be safe than to risk an attack because you weren't paying attention. Be safe out there!

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