Mile Square Regional Park has some of the highest bird diversity in Orange County and this gentle paced walk led by highly trained OC Parks Volunteers will help bird watchers of all experience levels discover what the park has to offer. All are welcome and loaner binoculars will be available.

Water, closed toe shoes and sun protection are recommended. This approximately 2 mile walk will begin in Parking Lot H.

Minors aged 16 and younger must have a legal guardian present at all times.

Space is limited and advance registration is required.

The event is free, but parking is $5.

Rain will cancel the event.

For questions, please contact Averil Lough at averil.lough@ocparks.com or call (657) 735-3596.

Looking for a way to give back to Nature this Spring? Come help us behind the scenes at the Irvine Ranch Conservancy’s one-of-a-kind Native Seed Farm in Irvine! Every day at the farm is different; depending on the needs of the farm we will be harvesting seeds from beautiful native plants, planting new seeds in the annual plots, working in our native plant demo garden, or tending to younger seedlings in our nursery.

Working with us at the Native Seed Farm is a great way to grow your community and cultivate knowledge about local plant and wildlife! Absolutely no experience or special equipment required! 

Celebrate 50 years of recreation at Santiago Oaks Regional Park by hiking through its history! Learn about the Windes family that called this park home, the flood of 1969 and the grassroots effort to preserve Barham Ranch as parkland. Stops will include the Historic and Villa Park dams, iconic orange grove, nature center and more.

The walk will begin in front of the nature center located near the park entrance and will be approximately 2 miles with little elevation gain.

Walk-ins are welcome, but registration is recommended.

Children must be accompanied by a parent or guardian during the program and strollers are not recommended. Sun protection, sturdy footwear and plenty of water are strongly encouraged.

The program is free and parking is $5 per vehicle.

Inclement weather may cancel the program.

For questions, please contact resource specialist Shelly Marshall at (714) 973-6625 or shelly.marshall@ocparks.com.

Join Laguna Canyon Foundation and OC Parks at one of our Land Tending days in Aliso and Wood Canyons Wilderness Park as we learn and work together to create a healthier habitat for the native plants and wildlife that call Aliso Creek their home. Depending on the time of year, volunteers will assist with various stewardship activities, including removal of non-native plants, hand watering, seed collection, and/or planting of native plants. No experience is necessary. Come out and join the team to help restore the wild lands we all enjoy!

Age: 16 or older. Participants under 18 must be accompanied by a parent or guardian.

Location: Aliso Viejo Community Park (150 Cedarbrook, Aliso Viejo, CA 92656), we will walk to the project site together.

Parking: Free neighborhood street parking. Please park legally. Parking is limited, carpooling is encouraged.

Difficulty Rating: 2/5

Materials: Participants must bring plenty of water, closed-toed shoes, long pants, and sun protection. Gloves and tools are provided.

Safety precautions and protocols:

Advanced registration required. Every individual, including children, must be registered. Register here.
Group sizes are minimized for safety purposes. For group registrations or questions please email volunteer@lagunacanyon.org
Participants must individually sign a waiver at the beginning of the program. For participants under 18, a parent or guardian must sign the waiver.
To protect all employees, volunteers, and participants, please do not attend if you are not feeling well, have symptoms of illness or have been in contact with someone who was ill.
Contact volunteer@lagunacanyon.org or dulce@lagunacanyon.org with any questions.

Weather, including high temperatures and wet or muddy trail conditions, may lead to cancellation of this event.

Experienced mountain bikers can explore one of the most rugged and remote areas of OC Parks’ Irvine Ranch Open Space from the trails of Fremont Canyon Nature Preserve on this moderate-paced ride through Fremont, Blind, and Weir Canyons. Fremont Canyon remains one of the most wild places in Orange County, with a diversity of rare plants and animals. This ride includes natural trail hazards such as sand, tree roots, ruts, and exposed rocks.  PLEASE NOTE: there are multiple very steep climbs, with an approximate elevation gain of 2,000 feet over 15 miles.  This hard ride is for adult-only riders in excellent physical condition who will be rewarded with the beautiful vistas. Motorized recreation vehicles of any class or type are not permitted for use in the Nature Preserve.

If you use the Wilderness Parks for hiking, biking, photography or just relaxing, Trail Work might be right up your alley! Get up close and personal with the trails you use; you’ll see them in a whole new way. No experience necessary. This is FUN hard work. Whatever your skill level is, there is a job to do: clearing drains to get the water off the trail, pruning vegetation back to keep users on the trail, moving dirt to rebuild eroded tread, and restoring impacted areas are just some of the tasks we will accomplish. We will be using tools such as loppers, picks, shovels, and McLeod’s to improve the user experience, protect the fragile habitat and increase the sustainability of our trails. Expect to hike up to 4 miles while carrying tools.

Age: 16 or older. Participants under 18 must be accompanied by a parent or guardian.

Location: Canyon View Staging Area, Aliso & Wood Canyons Wilderness Park. From Pacific Park/Canyon Vistas intersection, go northwest on Canyon Vistas.

Parking: Park legally (note street signs) on or near Canyon Vistas, preferably between Coastal Oak and Madia (22144 region of Canyon Vistas). We will meet on the paved sidewalk easement leading toward Wood Canyon Trail. Parking is limited; carpooling is encouraged.

Difficulty Rating: 3/5

Materials: Participants must bring at least 3 liters of water, closed-toed shoes, long pants, and sun protection. Gloves and tools are provided. Feel free to bring your own gloves if you prefer!

Safety precautions and protocols:

Advanced registration required. Every individual, including children, must be registered. Register here.
Group sizes are minimized for safety purposes. For group registrations or questions please email volunteer@lagunacanyon.org
Participants must individually sign a waiver at the beginning of the program. For participants under 18, a parent or guardian must sign the waiver.
To protect all employees, volunteers, and participants, please do not attend if you are not feeling well, have symptoms of illness or have been in contact with someone who was ill.
Contact volunteer@lagunacanyon.org, craig@lagunacanyon.org, and nicholas@lagunacanyon.org with any questions.

Weather, including high temperatures and wet or muddy trail conditions, may lead to cancellation of this event.

Access is first come first served until parking capacity is reached. No registration required.

Equestrians, while space is not guaranteed we encourage you to please email irvineranchopenspace@ocparks.com to coordinate parking.

Come explore 3.3 miles of new trails at Saddleback Wilderness, part of OC Parks’ Irvine Ranch Open Space, through this self-guided opportunity. Designated trails will be open for self-guided hiking, biking and equestrian use. There are multiple trail loop options which vary in distance and level of difficulty. Choices range from an easy one-mile loop to multiple figure-8 configurations for those looking to maximize their mileage. Regardless of distance, nearly all options feature scenic views including a destination vista point offering 360-degree perspectives from the mountains to the sea.

Please review our Trail Tips page and FAQ page to prepare for your experience in the wilderness area.

Join OC Parks at Arden: Helena Modjeska Historic House
and Gardens for Create in the Park! Professional artist,
Dori Dewberry, will show you a fun way to approach
picture making using simple shapes to craft successful
compositions. Artists of all levels are welcome to enjoy
the tranquil grounds and draw inspiration from the historic
structures, water features and native garden. A guided tour
about the history of Arden and Helena Modjeska’s artist life
will also be included.

This program is designed for ages 12 and older. Materials
are not provided, only art instruction. A list of recommended
materials will be made available to all registered participants
in advance of the program. Sun protection, water and snacks
are recommended.

This program is free with free parking, but reservations
are required due to limited parking on-site. To RSVP, visit
OCParks.com for more information or contact the park office
at (949) 923-2230.

Enter a world of creativity by making nature themed crafts and artwork with your little ones. We’ll exclusively use Earth friendly materials that have either been found in nature, reused from regular daily products, or have been responsibly sourced. Sycamore trees will provide shade and ambiance over the picnic tables on beautiful weather days and the visitor center will give shelter if it’s chilly or toasty outdoors. Fear not, an enjoyable new project will be planned for each event!

Age: This program is intended for ages 4-10. Participants under 18 must be accompanied by a parent or guardian.

Location: Aliso & Wood Canyons Visitor Center, Aliso & Wood Canyons Wilderness Park (28373 Alicia Parkway, Laguna Niguel, CA 92677)

Parking: $3/car at Aliso & Wood Canyons Visitor Center. Parking is limited, carpooling (and walking or biking) is encouraged.

Difficulty Rating: 1/5

Materials: Participants must bring water and snacks, wear closed-toed shoes and sun protection.

Safety precautions and protocols:

Advanced registration required. Every individual, including children, must be registered. Register here.
Group sizes are minimized for safety purposes, supplies and enjoyment. For group registrations or questions please email volunteer@lagunacanyon.org
Participants must individually sign a waiver at the beginning of the program. For participants under 18, a parent or guardian must sign the waiver.
To protect all employees, volunteers, and participants, please do not attend if you are not feeling well, have symptoms of illness or have been in contact with someone who was ill.
Contact volunteer@lagunacanyon.org with any questions.

Weather, including high temperatures and wet or muddy trail conditions, may lead to cancellation of this event.

Come enjoy and learn about the bounty of the local flora and fauna. We will talk about how the animals and early settlers of the area survived and thrived with what nature has to offer. We will discuss how over-grazing, weather, and seasonal patterns affected the daily availability of food in times when there were no grocery or convenience stores.  Buckwheat graham crackers, prickly pear jam, and lemonade berry drink are a few of the tempting treats that we will taste-test. After a few snacks, we will take a short stroll along Baker Canyon and take in all the bounty of nature.

Join Park Staff and OC Parks volunteers with a trash clean-up day in O’Neill Regional Park. Take a morning stroll along the Arroyo Trabuco trail and day-use areas while picking up litter to preserve this beautiful park!

Ages 10 and up. Minors must be accompanied by a parent or legal guardian.

Materials such as gloves and trash bags will be provided. Limited trash pickers and buckets will be available.

Event Details:
Location: O’Neill Regional Park (Meet at Arroyo Trabuco Trailhead)
Parking: Available in the Oak Grove Day-Use area.
Admission: A $5 vehicle entry fee applies for those without a camping reservation. The event itself is free.

Participant Information:
Please bring plenty of water, snacks, close-toed hiking shoes, comfortable clothing, hat and sunscreen.

Weather, including high temperatures and wet or muddy trail conditions, may lead to the cancellation of this event.

RC Volunteer support is needed to assist in a fun field day for about 20 students from Delhi Center (ages 13 – 19) in Limestone Canyon Nature Preserve. Youth will  assist UCI’s graduate students in collecting data from the oak restoration project.

Bus will arrive about 9:30 a.m., lunch 12 – 1 p.m., departure by 2:00 p.m.

Support is needed to help work gates, assist as a sweep, and aid in group management.

Contract Kelley at kbrugmann@irconservancy.org for more details.

Ranger Reserves needed to provide excellent customer service and resource protection at Santiago Oaks Regional Park during wedding and reception. The events are limited to 100 people which includes all vendors, wedding party and guests. Alcohol is allowed only with a permit obtained in advance from the Permits Department and served by a licensed bartender under the supervision of a security guard.

OC Parks and the Newport Bay Conservancy invite you to attend our annual celebration: Earth Day at the Bay.

This free, family-friendly event features environmental-themed exhibits from community partners and local artists. Booths will feature activities which include arts and crafts, science discovery and educational information. There will be live music throughout the day as well as a scavenger hunt complete with prizes. Be sure to enter the opportunity drawing as well!

Food trucks will be on site with tasty treats available for purchase.

For more information call (949) 923-2290 or email unbic@ocparks.com.

Join us on this moderate paced fitness hike in OC Parks Red Rock Wilderness Park. We will hike around 8 miles at a 3.5 mph pace through coastal sage brush and see views of the surrounding Limestone and Black Star Wilderness areas. This hike is designed for fit individuals who relish the challenge of a brisk outdoor adventure.  Please bring a minimum 70 oz. of water. Come prepared with a pack, sturdy closed-toed hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail. Each participant must carry his or her own pack and water. Under-prepared participants may be denied access to this activity.

Enjoy an afternoon family hike in Baker Canyon, part of OC Parks’ Irvine Ranch Open Space. We will hike along a flat trail as we watch for red-tailed hawks and mule deer. The hike will average 2 miles round trip at an easy pace with a medium level of interpretation. This program is for participants who would enjoy a slower-paced and level hike. Wear comfortable clothes and sturdy shoes and bring water for the hike.

You will enjoy a gorgeous sunset with panoramic views of Orange County while hiking in OC Parks’ Irvine Ranch Open Space on the paved Hicks Haul Road. This hike travels 6 miles, out and back crossing over Loma Ridge. This is the perfect activity for you to get your work-out in and view the sunset. The hike is conducted at an average pace of 3 miles per hour, but you may travel a bit faster or slower, at a walk, run, or jog depending on your comfort level. Because of the paved surface of the road, you may wear regular running or walking shoes. Trail shoes are fine, but not required. Please bring adequate water.

Join us for an unforgettable evening under the stars at Ronald W. Caspers Wilderness Park! The Space Ranger Program and Starr Party, hosted by OC Parks staff and volunteers, offer fun and learning for families and space enthusiasts alike. No camping required—just bring your curiosity!

Space Ranger Program
Kick off your night with the Space Ranger Program, a one-hour event starting one hour before sundown at the Nature Center. This engaging experience features fun activities and space-related talks, perfect for all ages. Visitors are welcome to attend the Space Ranger Program independently of the Starr Party. Earn “Space Ranger” rewards by attending multiple programs and reaching exciting milestones along your cosmic journey!

Starr Party
For over 25 years, Caspers Park has been a hub for stargazing, earning California’s first “Star Park” designation in 2013. Once the sun sets, the Starr Party begins! Join us outdoors to marvel at the stars and explore the cosmos through telescopes provided by volunteers and OC Parks staff. Telescopes will be available until 9 PM, and visitors may leave whenever they choose.

What to Expect
Expert Guidance: Volunteers will share fascinating insights about the night sky and celestial objects.
Family-Friendly Fun: Activities designed for visitors of all ages.
Optional Gear: Feel free to bring binoculars, telescopes, or cameras, but no equipment is necessary to enjoy the event!

Event Details
Location: Ronald W. Caspers Wilderness Park Nature Center
Parking: Available in the lower lot near the Nature Center.
Admission: A vehicle entry fee applies for those without a camping reservation. The event itself is free.

Weather Notice
This event is weather-dependent. In case of inclement weather, parts of the program may be affected. For updates, call (949) 923-2210 on the day of the event to confirm if we’re clear for takeoff!

The title says it all. This is your chance to venture deep in the Irvine Open Space Preserve. Join us for a challenging and beautiful adventure. Hiking distance is up to 17 miles and is designed for advanced hikers. Participants must be physically fit and have distance hiking experience. Singletrack trails, steep climbs and descents are numerous on this route, with over 2,800 feet of accumulated climbing elevation. Most months, the route stays in the Irvine Open Space Preserve for its entirety, but will occasionally feature hiking to the sea and back: beginning in Bommer, the hike will head into Crystal Cove State Park, then pass through Laguna Coast Wilderness Park before returning to the Irvine preserve.

Experience the serenity of Bommer Canyon during this moderate-paced hike in the Irvine Open Space Preserve. We’ll experience mature coastal sage scrub and fantastic views overlooking the city of Irvine and the hillsides to the north. This hike is just over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.