The activities below are offered by a variety of organizations and their dedicated volunteers. All programs are FREE unless noted below. Programs led by IRC-Certified Volunteers require pre-registration, which closes at 4 p.m. on the day prior to the event. No walk-up registrations will be permitted for these events. For policies of other organizations, please use the sign-up information provided. For mobility device policies click here.
Note: Minors must be accompanied by a parent or guardian for these events. For programs requiring online registration, each adult and child must be registered. |
Need help? For the fastest answers, look for organization-specific contact information in each event listing (click More Information for full listing). If no contact information is listed, email info@irconservancy.org for assistance.
Updated Difficulty Ratings: The Hiking and Fitness Difficulty Ratings have been updated to reflect our current activities. Please click below to read the ratings.
Click here to learn more about IRC-Certified Volunteers. • Click here to learn more about the Difficulty Ratings.
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Friday, July 25, 2025
Twilight Hike in Orchard Hills

Come out and enjoy the evening with us on the Orchard Hills loop trail. This trail meanders around an avocado orchard on the edge of the open space preserve and provides fantastic ridge-top views of Irvine and the Pacific coastline.
The three-mile loop has several very steep climbs and uneven terrain. This hike is done at a moderate pace. Your effort is rewarded with a beautiful, unobstructed view to the west. This hike is not suitable for children under 12. Wear sturdy, closed-toed hiking shoes, bring water and a red LED flashlight.
Nature Journaling at Night

Nature journaling is a wonderful tool for nature observations, creating lasting memories, and making deeper connections with nature. Enjoy the transition from sunset to night during this activity.
Build upon your own sense of place to maximize mindfulness and relaxation. Each session will cover the basics of art theory and practices, journal anatomy, and immersing your senses in the wonders of nature. Bring a nature journal and your own art materials such as pencils, pens, or watercolors. A portable chair is recommended along with dressing appropriately for the weather, water, and snacks. Be prepared to move along the trail a short distance and sit to document the beauty around you.
Starry, Starry Night

Come join us for an interactive evening under the stars. Immerse yourself in a scaled-down version of our solar system. Test your imagination in naming the constellations. Reenact the struggle between Orion and the Scorpion. The hike will average 2-3 miles round trip at an easy pace with a high level of interpretation. This program is for participants who would like a slower-paced hike. Wear comfortable clothes and sturdy shoes and bring water for the hike. This activity is designed with kids ages 5 – 12 in mind but, everyone is welcome.
Saturday, July 26, 2025
Mountain Bike Ride – Loop of Limestone Ridge and Red Rock Wilderness Area

Accessibility for All: Birding Using the Power of Sound

Bommer Canyon is home to a variety of birds whose unique songs and calls fill the air to enhance our experience in nature. In this activity we will focus on identifying birds by their vocalizations, making it an inclusive and accessible experience for all, including those with visual impairments.
The activity will start at the Cattle Camp with an introduction on how to recognize and distinguish bird sounds by pitch, tone, and pattern. Then embark on a short walk to immerse yourself in the audible sounds of nature and practice identifying birds by their distinct vocalizations. We will walk slowly for about half a mile through a maintained hard packed dirt trail about four feet wide.
No prior experience is necessary. Participants can bring their own birding enhancement equipment and extra binoculars will be available. Wear comfortable clothing and shoes and join us in appreciating and enjoying our feathered friends through the power of sound.
Be sure to bring water and all items needed to keep you safe during our activity. If you need any specific accommodations, please email info@IRConservancy.org
Growing Together at the Native Seed Farm

Looking for a way to give back to Nature this Summer? 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!
Wilderness Access Day: Saddleback Wilderness

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 info@irconservancy.org 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.
Located within OC Parks’ Irvine Ranch Open Space, Saddleback Wilderness offers designated trails 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.
Saddleback Wilderness is located at 3066 Santiago Canyon Road, Orange, CA.
Morning Yoga Hike in Baker Canyon

Enjoy a 3+ mile hike and gentle yoga practice in nature. The hike through Baker Canyon, part of OCParks’ Irvine Ranch Open Space, includes an elevation gain of approximately 500′ and will be a nice warm up for a gentle morning yoga flow under a shaded canopy. Please bring water, your own yoga mat and large beach towel. Mats will not be provided; we will drop mats at secure location while hiking. Closed-toe shoes, water, hats and sunscreen recommended for the hike.
Art in the Canyon – Botanical Sketching with the Sawdust

Join Laguna Canyon Foundation (LCF) and the Sawdust Art Festival at LCF’s Headquarters as we learn about our native ecosystems and how we might explore them through art. This month’s program will feature a short native plant hike and instruction on how to sketch some featured plants. No experience is necessary.
Age: 16 or older. Participants under 18 must be accompanied by a parent or guardian.
Location: Laguna Canyon Foundation Headquarters (10 Phillips St. Laguna Beach, CA 92651, East side of highway 133)
Parking: Free at LCF Headquarters. Parking is limited; carpooling is encouraged.
Difficulty Rating: 1/5
Materials: Participants must bring plenty of water, closed-toed shoes, long pants, and sun protection. A Sawdust sketchbook and pencil will be 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 with any questions.
Weather, including high temperatures and wet or muddy trail conditions, may lead to cancellation of this event.
Create in the Park: Get Out and Sketch

Join OC Parks at George Key Ranch Historic Park for Create in the Park! Professional artist, Dori Dewberry, guides you through the basics of sketching in plein air. Keep it simple with a sketchbook and pencil as you explore the tranquil gardens, citrus grove, farm equipment and historic home. Experienced artists are also welcome to join to sketch the park and share successes at the end of the session. A guided tour about the history of Key Ranch 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 keyranch@ocparks.com.
Family Hike: Baker Canyon

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.
Sunset Fitness Hike on Paved Hicks Haul Road: Both Sides of Loma Ridge

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.
Bats: Heroes of the Night

As the day starts to settle into the night in OCParks’ Irvine Ranch Open Space, bats awaken, stir and streak into the evening sky. Come hear fascinating tales of our flying mammals. We will head out towards a popular roosting location as we watch our nighttime heroes begin their nightly adventures. This program is ideal to visually observe the bats in flight, though bat detectors are available to listen for their high-frequency calls. Be prepared to walk about 1/2 a mile. Dress warmly as it may be a chilly evening. A camping chair is welcome as we will enjoy an extended period of time listening for bats that fly about in the night.
Sunday, July 27, 2025
Early Morning Hike: Fremont Canyon

Come enjoy an early morning hike in Fremont Canyon Nature Preserve, part of OC Parks’ Irvine Ranch Open Space. Our hike climbs steeply from the mouth of Fremont Canyon, past an abandoned coal mine up to the Fremont Weather Station where winds have been clocked at up to 100 mph. After enjoying the view, we’ll hike back the same way to our starting point. This hike involves steep hills and a 1200’ elevation change but the rewards are panoramic views of Orange County, the Santa Ana Mountains and surrounding areas as well as possible wildlife sightings. Please arrive 15 minutes early; the entrance gate will be shut and locked 5 minutes before start of the activity. Be sure to come prepared with a sturdy day pack, water, snacks, closed-toe hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail.
Bommer Canyon East Fork and Ridge Route Loop Hike

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.
Hangman’s Tree Monument Hike: Orchard Hills

Join us for a challenging and beautiful adventure as we hike to the Hangman’s Tree Monument on Loma Ridge. Hike distance is 6 miles and affords fantastic views along the way, spanning the Pacific coastline, San Gabriel peaks and the Santa Ana Mountains. Several very steep climbs and descents are part of this route. We’ll accumulate almost 1800 feet of climbing elevation.
Mountain Bike Clinic: Terrain Skills

If you are new to mountain biking and interested in getting started the right way, or if you just want to hone your existing skills developing terrain-influenced bike handling over several types of man-made features, this is the clinic for you! The class begins with a brief overview of rider fundamentals starting with platform position and weight transfer then covering equipment basics & setup, braking, gearing and a brief bike maintenance Q&A session followed by a series of exercises demonstrating terrain-influenced bike handling over a variety of man-made features including log piles, rock step-ups, A-frames and many more. These riding techniques will be taught and practiced at the Mountain Bike Skills Development area. This activity originates in the City of Irvine and travels into OC Parks’ Irvine Ranch Open Space.
Weekly Nature Area Clean Up

Join Mile Square Regional Park staff and volunteers in enhancing the Nature Area habitat for local wildlife. Activities may include non-native plant removal, planting natives, watering, trash cleanup, and Butterfly Garden maintenance.
No experience is necessary; please bring a hat, sunscreen, snacks, water, wear closed toe shoes and a long sleeve shirt is recommended. Tools are provided. Please arrive on time, as work will begin promptly at 8 am.
Please note, this is a weekly reoccurring activity and space is limited. Please park in Parking Lot H and walk to the volunteer shed west of the overflow lot entrance.
• Space is limited and pre-registration is required.
• Minors ages 16 and younger must have a legal guardian present at all times.
• Rain or heat advisories cancel the event.
Family Hike

Join Laguna Canyon Foundation Volunteer naturalists in partnership with OC Parks to enjoy an easy, 2.5-mile Family Hike over moderate but uneven terrain (45-ft. elevation gain). Starting at the James Dilley Preserve, we will hike one of the most diverse areas of Laguna Coast Wilderness Park to Barbara’s Lake and back.
Age: 6 or older. Participants under 18 must be accompanied by a parent or guardian.
Location: James Dilley Preserve, Laguna Coast Wilderness Park (I-5 or 405 south to 133 south to stoplight at 73 toll road; and make a U-turn, go 1 block. Dilley is on the right.).
Parking: $3/car at James Dilley Preserve parking lot. Parking is limited, carpooling is encouraged.
Difficulty Rating: 2/5
Materials: Participants must bring plenty of water, closed-toed shoes, and sun protection. Hiking poles are recommended.
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 with any questions.
Weather, including high temperatures and wet or muddy trail conditions, may lead to cancellation of this event.
Photo Journey Limestone Canyon: The Sinks, Loma Ridge Backcountry and Sunset

Join us in the back-country wilderness for a journey filled with beautiful sights that are photographic and artistic sketching opportunities. Our journey begins in the afternoon. We will be deep in a secluded canyon, where time is measured in centuries, even millennia, in the sandstone cliffs of this ancient place called Limestone Canyon. You will board a 4-wheel drive vehicle for a 13-mile tour of the canyon and hills surrounding it. We will stop frequently for 15-30 minutes to admire the views, take photos, sketch landscapes, and answer questions.