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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Wednesday, August 20, 2025
After Work Fitness Hike on Paved Hicks Haul Road

Join us every Wednesday night in OC Parks’ Irvine Ranch Open Space for a fitness-focused hike on the paved Hicks Haul Road. During the spring, summer and fall, hikers will enjoy wonderful sunset views and a panoramic overview of Orange County. This hike travels about 3.5 miles, up to the top of Loma Ridge and back down. The hike is conducted at an average of 3-3.5 miles per hour, but you may travel a bit faster or slower, at a walk, run, or jog depending on your comfort level. Most participants finish the route in about 1 hour. 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.
Thursday, August 21, 2025
Thursday Morning Trek: Bommer Canyon

This week in the Irvine Open Space Preserve, we’ll be in Bommer Canyon, once part of the historic Irvine cattle ranch where corrals and ranch equipment still stand. The hike is a seven-mile loop with some climbing but rewards you with fantastic views overlooking the ocean and many Irvine locales. Please bring water, a trail snack, sunscreen, a hat, and any other necessary equipment to keep you safe on the trail. Get your boots out and register to hike the loop through the Laguna Coast Wilderness and back to Cattle Camp.
Demonstration Garden Maintenance: Native Seed Farm

Visitors to IRC’s Native Seed Farm are first greeted by our Demonstration Garden, providing inspiration for regionally suitable plant gardens. Our garden hosts a variety of native plant species which support a healthy local ecosystem!
IRC Volunteers are invited to help at our monthly Garden Maintenance Day! Our tasks each day are to be determined, but we’ll be tackling whatever jobs are a top priority to keep our Garden teeming with native plant life. Weeding, clearing, cutting, digging, watering, whatever it takes! Activities may include bending, stooping, crouching, squatting, long periods of standing, reaching, pulling, grabbing, and pushing.
Fitness Hike – Dilley

Please be aware this is a Fitness Hike and not for beginners; the pace is approximately a 19-minute mile. Join Laguna Canyon Foundation Volunteers to raise your heart rate and your spirits on this strenuous, fast-paced, 4.8-mile hike over steep and uneven terrain with a 650-ft. elevation gain.
Age: 16 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: 4/5
Materials: Participants must bring plenty of water, closed-toed hiking 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.
Equestrian Trail Ride: Horseshoe Loop to Fremont

Bring your horse and join us on the sage-scented trail up and down gentle hills. We will start from Irvine Park and proceed on the Irvine Regional Park Horseshoe Loop to Waterworks Trail that will take us under the towering overpass of the 241 Toll Road. We will see the foot of the Irvine Lake Dam and catch a glimpse of the heart of Fremont Canyon, part of OC Parks’ Irvine Ranch Open Space. We will pass the site of an enormous coal pile left by miners of yesteryear and then return to the park.
This is a walking ride that travels on single track trails and wide ranch roads. There will be several easy to moderate climbs. The ride will start and finish in Irvine Regional Park. Equestrians who have trail riding experience and their own fit and able horse are welcome.
Evening Hike on Hicks Haul Road

Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
Friday, August 22, 2025
Early Morning Hike to The Sinks: Limestone Canyon

Come along with us on this morning hike through beautiful Limestone Canyon Nature Preserve, part of OC Parks’ Irvine Ranch Open Space. You’ll be rewarded with a spectacular view of The Sinks as well as sweeping views of Orange County and the Santa Ana Mountains. This hike involves steep climbs and descents on both double and single-track trails.
Please note that the route for this hike may be shortened or altered due to trail conditions or adverse weather.
Fourth Friday Habitat Restoration in Buck Gully

Birds and other wildlife need healthy habitat to thrive. Simple things like planting native plants or removing non-native plants can greatly improve habitat for wildlife. You can be part of that positive impact while enjoying the beauty of Buck Gully near Newport Beach. Come help us with a variety of activities ranging from seed collection to weeding invasive plants.
This activity takes place on sloped terrain and sturdy hiking boots are highly recommended. All training, tools, and gloves will be provided to ensure your safety and comfort. Rattlesnakes are occasionally seen here and generally avoid people, but protective gear will be provided.
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!
Summer Morning Yoga Hike at Quail Hill

Enjoy an easy two-mile hike to warm up your legs before practicing yoga in nature. The hike is highlighted with views of Irvine, the remaining Tustin blimp hangar and a seasonal pond. The yoga is suitable for those with little or no experience and features basic poses centered on the muscles used for hiking, biking and other sports. Our focus on breath calms the nervous system and has positive effects on mental, emotional and physical health. If you have never done a yoga hike before you will be surprised how connected you feel to nature. Please bring water, your own yoga mat plus a large beach towel, and wear shoes appropriate for hiking on trails.
Relax, Rewind, and Recharge: a guided nature therapy walk

Deeper your connection with nature on this gentle and meditative walk-through at Mile Square Regional Park. Inspired by the Japanese practice of “shinrin-yoku,” or “forest bathing,” you will discover the healing power of nature for yourself.
This slow-paced walk will begin with a guided meditation to help you tune in with your senses, followed by a series of invitations focusing on sense-based explorations. Throughout the program, will be encouraged to deepen your connection with nature, a proven process to help reduce stress and leave you feeling recharged.
Participants are encouraged to bring a yoga mat or other comfortable seating and their favorite tea or water for the closing tea ceremony. Please note this program involves drinking tea from sustainably sourced native plants. Wear closed-toe shoes, sun protection and bring water.
We will meet at Freedom Hall.
Advance registration required.
This program is recommended for ages 16 and older. Minors under 18 must be accompanied by a guardian.
This program is free and parking is $3 per vehicle. Please arrive on time to experience the full sequence of the program.
For questions, please call 714 973-6600
Inclement weather may cancel this program.
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, August 23, 2025
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!
Moderate-Paced Mountain Bike Ride: Fremont, Blind, Weir Canyon

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.
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.
KIDS Mountain Bike Clinic- Rider Skills for Kids

If you’ve got kids showing an interest in mountain biking and want them to learn practical bike handling skills, then join us for the IRC Kid’s Rider Skills Clinic. The class begins with an overview of bicycle safety and clinic fundamentals followed by a series of exercises demonstrating rider-influenced bike maneuvers such as front & rear wheel lifts, hops, drop/roll-offs, late & emergency braking and cornering techniques over pavement, loose dirt, rocks, logs, ruts & potholes. Watch your budding riders enjoy a fun-filled morning on their bikes while developing confidence navigating rocks, ruts/potholes, step-ups/drop-offs, emergency braking and cornering.
Native Plant Walk at the Seed Farm

Join us for a leisurely walk through the Native Seed Farm to see plants maturing throughout the year. We’ll stick to the hard-pack roads around the fields – bring your camera to take photos or simply enjoy the scenery. You’ll learn about the plants we grow and why we grow them and see pollinators in action.
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.