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Palomar Mountain-Observatory Trail

3.9 (13 reviews)

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Lower valley from near the look-out deck.
Sami C.

The Palomar Observatory Trail is one of my favorite hikes in all of San Diego. This trail is not the most of anything. It is not the most strenuous, the longest, the easiest to get to, nor does it offer up the most open panorama views of the county; its charm is in its variety of sights, terrain, and recreation. The trailhead is located in the Palomar Observatory campground. The drive to this site is considerable but beautiful, so I suggest making this trip an all day or at least a half day affair in the mountains and surrounding communities. A $5 day use fee is enforced. The novelty in this hike for a southern Californian, and perhaps the reason why I am so fond of it, is because shade is never too far away. Certain parts of the trail never see sun, and shade-loving plants like ferns are able to grow in cool, dark groves here. (This goes for poison oak as well- so be aware.) This trail is often thinly populated. There are even less hikers during the work week or outside of summer break months. Not that I follow my own advice, but it would be a good idea to bring along a friend or two as this is prime mountain lion country, and you can't rely on heavy trail use to scare them off. A vantage point about half a mile from the campground allows for a brief glimpse out of the tree line into the valley below. Pay attention to the smells of different trees and brush as the landscape changes during your relatively short ascent (or descent). Assuming you've just hiked from the campground up the very mild grade to the observatory, (about 2.25 miles one way) you can now wander around the observatory grounds and enter the giant white dome for free or pay a few bucks for a tour of the telescope. Getting here always feels like a prize after a short hike, but a hike nonetheless. Take the same trail back down to your car.

Stacie M.

It's a bit of a drive from San Diego, but in my opinion, worth it! There's lots of trees on this hike, it is beautiful in the fall (although in the fall the river is dry, in the spring you get that benefit). I've done this hike 3 times now, this last time we couldn't find the start at the bottom by the campgrounds, so we ended up driving up to the observatory and starting there. You're technically starting at the "top", hiking down and then back up this way - but the hike is pretty easy and doesn't make the hike back up too hard. I am pretty sure you just look for the Observatory campgrounds and can start from there too. It's out and back, about 2.5 miles each way. This time we actually ended up getting lost twice, which had never happened before. Both times (once on the way there, and once on the way back) was where the trail meets the river bed. Since the river wasn't running, we accidentally took the river bed trail instead of the actual trail and had to turn around, so keep your eyes out for that! Even on a weekend, this trail never gets too crowded, so it makes for some nice quiet nature time. Trail is definitely dog friendly with all the shade and not too steep.

Mendenhall Valley Overlook
Sue M.

The lower trail head for this hike starts in the Observatory Campground off of S6 on Palomar Mountain. There is a little amphitheater at the head of the trail. From there, you work your way up on the shady trail until an overlook with a sweeping view of Mendenhall Valley. The trail continues up until the Palomar Mountain Observatory. The trip is a little over 2 miles one way. Good workout... great views.

Little hike of the day Done March 2015
Lucita M.

My friendly dog and I did this beautiful hike during winter months (Mars-2015) totally love it the whole scenery was beautiful I would defiantly try it again like many have mention it would be nice if had couple signs We where there after the stormy weekend and plenty of snow on the ground we just actually fallow the foot steps in the snow to fallow our way to the end of the trail. On our way back notice on of the trees felt down and block part of the trail nothing big we just jump over \O_O/

Observatory Trail Map from the trailhead near the Observatory Parking lot

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Palomar Observatory - The Hale Telescope from the south

Palomar Observatory

4.2(65 reviews)
4.1 km

Took an incredible tour with two very informative and incredible tour guides. We were able to get…read moreclose to the telescope and operate a simulation on how it works. It was very cool and we enjoyed our time here.

Yesterday (March 18th, 2025) we made the drive up to Mt. Palomar Observatory, something my…read more93-year-old father-in-law said he wanted to do. Seeing this wonder had been in the back of my mind as well, so I said, "Let's do it!" Having only recently lost his wife, through tears he explained to our amazing, friendly and knowledgeable guide Christi that he'd hoped to bring her up to the observatory someday, but she passed before he'd had the opportunity to do so. To Christi, he said, "I'd love to look through that 200" telescope and try to find my wife in Heaven." Definitely a tug on the heartstrings moment... and she responded with the sort of compassion one would expect from a family member. As other reviewers have noted, the public is not allowed to look through the scope; that privilege is reserved for nighttime astronomers. News to this 70-year-old reviewer... learn something new every day! That said, Christi explained to us the intricate construction of the telescope, the "re-mirroring" every two years, how the entire dome rotates to accommodate the different astronomers' needs, why the inside of the observatory is kept at a chilly 40°, and so much more. She told us she was "...new here..." but would answer as many questions as she could. Well, I'm a questioner, especially when seeing an incredibly complicated device such as the Hale Telescope (named after astronomer George Ellery Hale). Christi was able to answer most of my inquiries, and I have no doubt she will research the answers to any questions that stumped her. I cannot recommend this young woman highly enough to the powers that be at Mt. Palomar Observatory. Next to the gift shop is a small but very informative room for visitors thirsting for more information. The infinity of the Universe has always fascinated me, along with the mind-boggling intelligence of those who wish to explore its vastness. This tiny room is bursting with their stories. To those who posted "glass-half-empty" reviews here, I'm sorry the wonder of this landmark was lost on you. Perhaps you'll give it another look sometime. Getting a feel for how tiny our little planet Earth is when compared to the infinite puts our very existence into an entirely new perspective.

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Palomar Observatory - Museum interior

Museum interior

Palomar Observatory - Very informative and answered all your questions...

Very informative and answered all your questions...

Palomar Observatory - Well done...

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Well done...

Mount Laguna Observatory - SDSU property

Mount Laguna Observatory

4.8(5 reviews)
68.0 km

W always stop here when we visit Mount Laguna, It has a nice parking lot which is never full. Lots…read moreof trails for hikers, bikers and horses. If you walk up through the observatory there is an incredible viewpoint where you can see for miles.

We came up here recently overnight and I hadn't been in years. When I used to come out this way for…read morework I enjoyed coming up to Mount Laguna. I have to say it's still incredibly beautiful in the evening, watching the sunset. It's definitely one of the best views around and getting a chance to see the stars so brilliantly is a must as the pollution is more limited up there, making for clearer skies. The elevation is obviously higher, so dress in layers. I didn't drive up here this time, which was really nice, I had the chance to catch up on my sleep. It's not that bad of a drive though. We stayed nearby overnight, but it's worth the drive either way imo. There aren't that many places like this, especially in underdeveloped areas. The Pine House Cafe & Tavern is nearby on the Sunrise Highway if you get hungry afterwards. Be forewarned there's a bit of a walk to the top of the road from the visitor parking lot to the visitor's center. Adjacent to the visitor's center are the two apartments for visiting astronomers, a lecture hall, a kitchen for public gatherings, and the museum/gift shop. The Mount Laguna Observatory is owned and operated by SDSU under permit from the Cleveland National Forest. It's not unusual to see SDSU or local community college students here working on research projects or school activities. They do have a dedicated visitor's telescope and deck for public viewing. There are other telescope domes that are not available to the general public, but if you're willing to get a graduate degree in astronomy from SDSU I'm guessing you can get in there..

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Mount Laguna Observatory - I miss you

I miss you

Mount Laguna Observatory
Mount Laguna Observatory

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The Observatory North Park - Performance Stage

The Observatory North Park

3.2(686 reviews)
67.9 kmNorth Park
$$

A great venue. The interior architecture is phenomenal. Sound quality is very good…read more The floor is slightly slanted upward toward the back. There are little sections separated by railings, which add a little separation. We paid for the VIP up top (not the four-top tables). We could choose to sit on a counter/bar stool with a thin-line bar top. But, it was farther back and you looked down at the people in front of you. So we moved to the right side in a standing section. The best! On the rail. Had a table to set drinks on. Private bathroom for upper level guests. Way worth it. One thing I wish they did was sell the 4-tops in twos. They are great. It, it's not always easy getting four people together for a show. Oh. Parking is a breeze. Structure across the way validates for concerts.

I went to the Heated Rivalry Rave and I can say that was such a fun event…read more Purchasing tickets online was really easy and getting in was fast and efficient, I felt like everyone was working together to make it safe and easy. The venue itself is really huge, I've been for a couple podcast tours but it was always seated so getting to come where there was open floor was fun. Lots of space for dancing and letting our little hearts live in the music. Would totally come back or another event here!

Photos
The Observatory North Park - VIP bar on the second floor. You can order food from the West Coast Tavern menu here.

VIP bar on the second floor. You can order food from the West Coast Tavern menu here.

The Observatory North Park - Inside

Inside

The Observatory North Park - Waiting for the show

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Waiting for the show

Mount Wilson Observatory

Mount Wilson Observatory

4.5(82 reviews)
148.2 km
$

I went on the Docent led tour and we had a blast the man (I really wish I knew his name, he's a…read moreprofessor of physics). Such a fantastic tour and a lot of information to take in. The tour lasted 3 hours and we had two people that were using walkers and they were patient and got them up to the various areas, don't be discouraged, not a lot of walking. Though getting up the Elevator involved a pully system and we only had a few people almost fall off (kidding, you don't get to be on the elevator, the man you meet in the Sun Telescope room however does go up there to align the scope every day.) So yes your feet will be on the ground, aside from a few steps up to the main area. We plan to come up there at night, but it does require good driving skills to get up there, just drive safe and slow, you'll be okay. Was jazzed that I can see the Observatory from my location here at home w binoculars.

Visiting Mt. Wilson Observatory is a great opportunity to learn about astronomical history, as well…read moreas the history of scientific endeavors in the Los Angeles area. Einstein was here, after all! The location itself is stunning, offering great views of the L.A. area. And the observatories, preserved by the valiant efforts of firefighters after too many wildfires to count, are something to see. We, unfortunately, sprung for the allegedly 2-hour tour at $20/person. The funds support the observatory, so no problem there. However, our docent was extremely long-winded and had no sense of time management whatsover, even on one of the hottest days of the year. After we were almost 3 hours into a supposedly 2 hour tour, we decided to leave early due to exhaustion and boredom. (We were starting to feel like we were on a cruise to Gilligan's Island......)To be honest, there was not much that we saw or learned on the tour that couldn't be seen just walking around and looking up information online. So, my recommendation is: donate money to the Observatory by all means but skip the docent tour unless astronomy is your biggest passion in life. Also, remember you'll need an Adventure Pass to park in the Observatory parking lot near the trailheads. Definitely worth a visit!

Photos
Mount Wilson Observatory
Mount Wilson Observatory
Mount Wilson Observatory - Matinee Event, screening of 2001: A Space Odyssey

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Matinee Event, screening of 2001: A Space Odyssey

Palomar Mountain-Observatory Trail - observatories - Updated July 2026

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