Trails & Open Space 

Ranger Services works to provide both educational and recreational opportunities to the community of San Luis Obispo. The City's 7,000 acres of designated open space promise to have something for everyone including rugged hiking trails, challenging mountain biking and leisurely scenic pathways just minutes from downtown.


View Open Space and Trail Maps here.

Bishop Peak
Cerro San Luis
Irish Hills
Islay Hill
Johnson Ranch
Laguna Lake
Reservoir Canyon
South Hills
Stenner Springs
Terrace Hill 
All Open Space

Trail Updates
Please note that updates occurring over the weekend may not appear until Monday morning.

Open Space Status as of: 5.20.19



Bishop Peak


Cerro San Luis


Irish Hills Areas (3):


  • Madonna trail head
  • Prefumo trail head

  • Sterling trail head

Islay Hill



Johnson Ranch


Laguna Lake

Limited Access


Reservoir Canyon

Limited Access


Bowden Ranch



South Hills



Stenner Springs



Terrace Hill




Junior Ranger Activity Camp: FULL

Ranger Service staff offer five days of experiential outdoor activities and learning that help kids understand our local environment and how to protect and enjoy it! Campers will enjoy a bit of classroom style instruction in nature combined with crafts, and other activities. Open to children ages 7-10 at the start of camp.

FULL: June Session: Wilderness Adventure Warrior Week: Kick off the summer with the City of SLO Ranger Service in a week-long wilderness environmental camp. The Rangers will introduce the campers to basic wilderness adventure skills through play and instruction to optimize kids time spent outdoors. Rangers, along with special guest speakers from the community, will teach about coexisting in ecosystems with our four legged and winged neighbors. Campers will come away with summer camp stories to share, a newfound appreciation for the place we live and a City of San Luis Obispo Junior Ranger Certification and Badge. 

Ages 7-10  | June 10 -14 | 8:00 a.m. – 2:00 p.m. | $131 

FULL: August Session: Inner Animals in the Oaks: Spend the end of summer vacation with the City Rangers discovering your inner animal in the Oaks! Our ecosystems are dependent on the health of our animals and their abilities to migrate. The Rangers along with community speakers will be teaching through games, play and instruction the types of four legged and furry friends among them in the oaks and open space. Campers will learn about the web of life and the important role humans play in everything around us. Campers will come away with unique summer memories, a newfound appreciation for the place we live, and a City of San Luis Obispo Junior Ranger Certification and Badge. 

Ages:7-10 | Aug 5-9 | 8:00 a.m. – 2:00 p.m. | $131 

LOCATION: Monday – Thursday: Laguna Lake Park in the gazebo area, towards the end of the park. Friday: Johnson Ranch House and Educational Farm, 5182 Ontario Rd. 

FEES: $131 per week 

Package price includes: a full week of care (Monday through Friday 8am to 2pm), a daily schedule of activities/lessons, and a morning snack. 

*No refunds. Credits may be issued upon approval from the Ranger Services Supervisor. 



  • Participation in previous Jr. Ranger Camps should not discourage interested parties from registering. Each Camp incorporates different themes and new activities.
  • Spaces are limited, register early:
  • Drop-off and pickup location of Camp Monday – Thursday will be the outdoor gazebo area located at the end of Laguna Lake Park. Friday will be the Johnson Ranch House and Educational farm at 5182 Ontario rd. Parents/guardians MUST sign campers both in and out of Camp daily.
  • Campers must bring a lunch.

Ranger-led hikes

Ranger led hikes are a great way to learn more about the open spaces you enjoy. Rangers cover topics from flora and fauna to local history of open spaces. These hikes are also a great way to get to know your local rangers and ask questions about the Ranger Service and responsible use of open space. 

**DATE CHANGE** May 26 Johnson Ranch - Wildflower Hike – 9:00 am
Cal Poly Botany Professors Jenn Yost and Matt Ritter join to help ID flowers and answer questions.  Meet at Johnson Ranch Trailhead (the intersection of South Higuera and Ontario Rd)
Route: Orange Loop
Difficulty: Easy 1-2 hours

June 23 – 9:00 am, Irish Hills
Meet at Madonna Rd. Trailhead (Roundabout at Madonna Rd. and Eto Cir.)
Route: Yellow Loop
Difficulty: medium, 2-3 hours

July 14 – 1:00 pm – Irish Hills
Meet at Madonna Rd. Trailhead (Roundabout at Madonna Rd. and Eto Cir.)
Route: Blue loop
Difficulty: easy, 1 hour

Aug 25 – 1:00 pm – Reservoir Canyon
Route: Reservoir Canyon loop to top
Difficulty: hard, 2-3 hours

Volunteer with the Rangers

Wednesday Workdays

Meeting every Wednesday at 8:45 AM. An opportunity for volunteers to gather and work on trail maintenance in City-owned open space. Currently working on Morning Glory and various projects.  Email Ranger Niels Grether at to check location and for more information.

Saturday Workdays

Volunteers assist City Rangers twice per month on specific sections of the open space in need of maintenance. All workdays run from 9am to 12pm

May 11         
Irish Hills –
Brushing on Mine Trail.  Meet at the Sterling Ln trailhead.  From Los Osos Valley Road head southwest on Royal Way, follow it through the neighborhood to Sterling Lane.  Park on Royal way at Sterling Ln.

Saturday, June 1              
Bishop Peak – Fencing off trail cuts.  Meet at Patricia Dr. Trailhead (near Patricia Dr and Anicapa Cir)

Saturday, July 6                  
Irish Hills – Repairing fencing at bog thistle intersection.  Meet at Prefumo trailhead, From Los Osos Valley Road, take Prefumo Canyon Road towards sea canyon. Trailhead is about .3 mile past Castillo court on the left.

Saturday, Aug 3                 
Irish Hills – Brushing.  Meet in the south corner of the Home Depot parking lot off of Froom Ranch Way.

Thank you, devoted volunteers!

The Parks and Recreation Department appreciates the many community members who consistently strive to maintain and protect the thousands of acres of City open space and trails.

Open Space Guidelines

(805) 781-7302
Email Us


For the safety of all users
, including hikers, cyclists, trail runners and others, please comply with the following:

  • Access Permitted from Dawn to Dusk ONLY
  • Camping Prohibited
  • Stay on Designated Trails
  • Wear Proper Hiking Shoes
  • Bring plenty of water and snacks
  • Dogs Must be on a Leash
  • Pick up after your Dog
  • Pack it In, Pack it Out
  • ID card, first aid kit and cell phone
  • More Information 


 Open *expect closures this weekend
*Expect closures this weekend