Alum Rock South Rim Trail

MODERATE 228 reviews
#1 of 9 trails in

Alum Rock South Rim Trail is a 4.3 mile moderately trafficked loop trail located near San Jose, California that features a river and is rated as moderate. The trail offers a number of activity options and is accessible year-round.

4.3 miles
770 feet

kid friendly



mountain biking

nature trips

trail running




wild flowers



over grown


no dogs

Lots of shade for hot summer days, historic century-old mineral spring spa. This is a great hot summer day hike, as this trail provides plenty of shade relief. Check out the remnants of the mineral spring spa. The trail starts paved, then turns to dirt pack. Coming out of the trail brings you along Alum Rock, and back to the trailhead. Some portions of the trails are shared with both bicycles and equestrians. There are some switchbacks, as noted on the map, that make the elevation climb much less strenuous. There is currently a fee of $6.00 for parking inside the park, and dogs are not allowed. This trail is closed on Mondays.

15 days ago

a fav on a cool morn!

18 days ago

A Nice Hike to go to on even on a hot day. North Rim trail was closed so took the switchback trail to south rim trail. Wasn't too disappointed though. The switchback is a pretty good workout in itself. The park as such is a really good place to plan a group picnic. A lot of Picnic spots and tables with nets for some outdoor shuttle or some volleyball. Loads of trails and biking routes. Many alternatives to lengthen the trek. Definitely looking forward to coming again and doing another trail

19 days ago

Good tree cover. Fun hike!

25 days ago

Loved this trail! All the tree coverage made it a very pleasant hike on a hot day, and the scent of wildflowers and herbs along the way was intoxicating :) Can’t wait to go back!

28 days ago

Love this trail although closed passed the switchback

1 month ago

The ascend was beautiful, shady and calm. Lovely hike for mornings. Park has two free parking lots and you get a spot if you are inside by 10.30am. You will have to walk a mile from the parking lot to reach the trail head.

1 month ago

A great walk on a warm day, lots of shade and plenty to see

1 month ago

People complaining about to this park, just a bunch of whiners. There's no resaon to post review as a 3 *** or 2 park. This is an AMAZING place to hang around with family and friends. Live to the fullest people!

1 month ago

Pleasant shady hike. Nice to be by the creek and then get some elevation after the switchbacks and see a great view of San Jose.

1 month ago

It’s a nice trail especially If you are not used to do a lot. It’s considered as moderate but l would say it’s an easy to light moderate trail. Great for families with kids who want to do more than just a walk. Nice view on the valley, 75% of the trail is under the trees canopy. You will love it during summertime .

2 months ago

The trail map is wrong

4 months ago

Alum Rock park is one of my favorite it's the first park I started exploring on my own great to bring kids & family.It is considered A moderate hike,It offers free parking,water fountains,restrooms& playgrounds for children.Take the trail to eagle rock park where you can overlook San Jose & enjoy the sunset! For those who enjoy mountainbiking alum rock park is A great place to do that too! I always bring A new or returning friend & they love it

mountain biking
4 months ago

I'm used to mountain biking in Washington so maybe I'm a little biased, but I didn't love this as a mountain biking trail. Some great views at the top, but very little technical work required, mainly just brute leg strength. It was also a little too crowded to get any good speed up without someone being in your way. Not a bad ride, but also not great.

5 months ago

Good uphill climb, beautiful views!

mountain biking
5 months ago

Love it up there great place to hike or mountain bike!

7 months ago

Great morning hike with enough elevation to get the heart rate up. There's lots of shade but it's never too covered up. Tons of small wildlife scrabbling about.

trail running
9 months ago

Super fun single track when Penitencia Creek trail turns into South Rim trail. A little too much pavement and can be crowded along Penitencia Creek trail. Some of that can be avoided by taking the North Rim trail and connecting to South Rim.

11 months ago

My very first hike ever back in 2009. Starts off gorgeous, then the sun kicks your ass as you trail uphill lol it's a gorgeous hike with a well-earned view. Don't bring your rookie friends in this hike if you plan on making it to the top.

Thursday, July 06, 2017

Some easy trails. There's a playground, so its kid friendly.

Sunday, June 11, 2017

South rim trail is closed indefinitely, don't waste your time if you are heading there.

Wednesday, May 24, 2017

There is a notice on the trail head saying south rim trail is closed due to 2017 winter storm.

Wednesday, May 17, 2017

So nice right now. The bridges are stunning.

Wednesday, May 17, 2017

One of my all time favorite hikes. Not too hard. Great hiking through tree shaded north slope trails. Beware: I have personally had all too close brush with a rattler here. I've also heard credible reports of mountain lion sightings on this trail. Two words: Situational Awareness.

Sunday, April 30, 2017

Wow it is real beautiful here. The stream runs all the way through and it's so peaceful.

Friday, February 24, 2017

This was my 3-year olds first hike. I'm from San Diego where most hikes are desert (full sun, no trees) and so this beautiful hike with all the trees and the fact we saw deer gets this hike 5 stars! My son made it to the top. I'm so proud. He asked to be carried one time but that lasted about 10 minutes and then he wanted to walk/explore on his own.

Monday, February 06, 2017

Great views of the hills and city.
The South Rim switchback (eastmost part) is currently closed because of a landslide. Looks like you could walk over it but I just turned back as the signs recommended.
Parking is $6 for a day.

Sunday, January 08, 2017

Wonderful views of San Jose and off-roading was nice

Saturday, October 08, 2016

Parking is paid and the parking area is usually not very busy, except when groups or families book the picnic grounds for a party.
The trail is understandably dry and dusty this time of the year, but the views from the hill-tops are quite amazing. The trails can be very narrow, especially in the switchback routes, but overall the risk level is not high. If you hike before noon, you'll find that most of the south rim trail is shaded. Elevation is also okay, but it can get somewhat steep in the switchbacks.

Saturday, September 17, 2016

The trail is partially closed due to land slide

Saturday, August 20, 2016

Very nice for beginners or moderate hikers.
Nice shaded trail with medium incline. The view is excellent through out. Also nice picnic area in the starting point suitable for group activities and barbecues.

By the way the first three parking lots are free and the third (closer to trail) is paid.

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