Explore the most popular trails in Charies A and Mary R Maino Open Space with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

Great loop. Gets a little rocky coming down from the summit.

Great hike for a dog. Super wide trail and room at the top for a great view of downtown SLO.

great hike did it 1hr 45 min long way up and fire trail down the other side....

highly trafficked, but it is gorgeous from the top. avoid midday as the air is usually thick and hot.

hiking
muddy
2 months ago

Nice trail. Close to town and easy to stop by for a quick hour hike or longer. Love this trail.

hiking
over grown
rocky
4 months ago

not a bad trail can do it pretty quickly

hiking
5 months ago

Trail ain’t closed! A little muddy but not terrible. Got a light drizzle which was nice and cooling.

hiking
bugs
muddy
rocky
5 months ago

Using this trail for training for a race it’s been raining a lot so it’s kind of tough on the feet lots of bugs in the streams. Still well we’re doing in evening.

Great hike, great work out. The trail head is about 1.0 down a narrow, curvy entrance road, be prepared to pay $10 to park and it is monitored with an onsite manager, worth price to see the view from the top...gorgeous!!!

hiking
5 months ago

Second time hiking this. Didn’t hike to be top this time, just around. North side had quite a bit of muddy/wet areas but doable if you’ve got got shoes on and aren’t afraid of getting a little muddy.

Great view and fun hike! I made a bit of a deviation from going to the top but a helpful couple told me how to get up there so I added abt .6 to the final hike. Beautiful view especially this time of year!

hiking
muddy
rocky
6 months ago

Went during recent rains.... refreshing trail but needs a break from the rain. Ruts and Rocks just waiting to crank an ankle... if you’re running.... but other than that.... so awesome when all you see is green and water everywhere.... Sweet! Seems like cows or people have provided plenty of options for off-shoots...allowing the ability to elongate these trails without bushwhacking and still remaining on trail.

Great hike come early morning because it’s gets packed with hikers

Great view from the top, and we got to walk through a field of cows which I liked

Really Good Workout.

Great hike today. Wide trails

hiking
10 months ago

Good hike, my 13 year old dog was able to reach the tippy top with me. We went clockwise and were bombarded with high noon sun... hike would have been a little easier if it weren’t for the heat (still not too bad, late October). The hike down was mostly shade.

Mostly doing flat land trails in Austin this is fantastic change. Beautiful views all the way up, if no marine layer obviously. I've seen folks from 6 to 86 on this trail. As a side note, I lost my wallet on the trail. After realizing later, we went back and found it by a billboard fully intact. Folks here are top notch. As a plus, multiple breweries within 2 miles once you're done. Enjoy!

hiking
11 months ago

Cerro San Luis is an easy hike and the views are spectacular of the Central Coast, this is easily the busiest trail in the area so be prepared for hikers, runners and bikers. This hike of Cerro San Luis is well worth doing, best in the spring when everything is blooming and it is not too hot. This trail can have both ticks and Poison Oak as hazards if you get too close to the sides or go off trail. Virtual Treadmill video of this hike can be seen on my YouTube Channel, copy and paste link below to watch it. Thanks. https://www.youtube.com/channel/UCFO02nxPdM4-CabegFIPlow?view_as=subscriber

Such a fun trail! Great views at the top, and lots of fun things to play on. I had to keep an eye out for mountain bikers, but they were very respectful in sharing the trails. Its not too strenuous, but still enough to feel like you got a workout. I really enjoyed this loop.

Good hike not hard the elevation gain is spread out over two miles. It was overcast the day I hiked so I didn’t have much of a view from the top.

hiking
Friday, August 03, 2018

Great afternoon hike! Most is on a clearly defined, wide trail, although there are smaller paths if you want. It is worth hiking to the very top (there is a pole to define it). Great overview of SLO!

hiking
Friday, August 03, 2018

Great afternoon hike! Most is on a clearly defined, wide trail, although there are smaller paths if you want. It is worth hiking to the very top (there is a pole to define it). Great overview of SLO!

Wonderful and peaceful hike.

This is my go to hike in SLO. I love it. Beautiful view from the top and good workout.

hiking
Sunday, May 13, 2018

This route up to the summit of Cerro San Luis Obispo is one of the most popular hikes in the San Luis Obispo area. Despite being within walking distance of downtown, it has a remote, semi-wild feel. The trail starts at the Lemon Grove Loop Trail just off Highway 101 and Marsh Street. While there is plenty of parking available, it can still fill up fast, especially on weekends. The trail starts as the Lemon Grove Loop Trail and climbs up through the Cerro San Luis Obispo Natural Reserve (also called the Charles A and Mary R Maino Open Space).Staying to the left on the wide path at several junctions, you will eventually come to a vehicle barrier that marks the spot where you leave the Reserve and enter private property owned by the Madonna family. This area is open to the public, but stay on the trail. You shortly pass through a second gate and then gradually curve up the mountain. A series of switchbacks keep the grade from getting too steep, but the road is very rocky and rutted. You'll eventually come to a flat clearing just below the summit with a large wooden platform. Several paths wind up through the rocks to the summit, where you'll enjoy remarkable views of all of San Luis Obispo. On a clear day, you can see all the way to Morro Bay. Make a note of each intersection on the way up, as there are no trail signs once you leave the Reserve and there are numerous unofficial paths near the summit. It's also possible to continue east from the summit and make your way down to the Lemon Grove Loop for a loop trip. This trail is popular with mountain bikers and bike bells are provided near the trailhead for their use. Most of the trail is a wide dirt road, so you shouldn't have any problems. While the views are best on a clear day, there's very little shade anywhere along the route and hiking on a foggy day will be more pleasant, at least during the warmer months of the year. NOTE: Several days after our hike, the San Luis Obispo Parks & Recreation Department closed the Lemon Grove Loop Trail indefinitely due to numerous mountain lion sightings in the area. While this closure only affects the Lemon Grove Loop portion of the route, it effective blocks you from accessing the summit via this route until the trail is re-opened. It's still possible to reach the summit from the longer route that starts at Laguna Lake.

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