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.
Search & Filter Activities
Sunday, May 4, 2025
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.
Let’s Go Hiking!

Do you want to take a hike with other nature enthusiasts? Enjoy a 3.8-mile, moderate (600-ft. elevation gain) hike through Laurel and Willow Canyons led by Laguna Canyon Foundation volunteers in partnership with OC Parks. You will experience a variety of plant communities, from Coastal Sage Scrub to Oak Woodland and enjoy a view of the ocean at the top. Minimal interpretation is provided, but questions are welcome. The terrain can often be rocky and uneven.
Age: 12 or older. Participants under 18 must be accompanied by a parent or guardian.
Location: Willow Staging Area, Laguna Coast Wilderness Park (West side of Laguna Canyon Rd/SR-133, just south of El Toro Road).
Parking: $3/car at Willow Staging Area parking lot. Parking is limited, carpooling is encouraged.
Difficulty Rating: 3/5
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.
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 9 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
Monday, May 5, 2025
Bright Birds of Spring in Black Star Wilderness – Bird Walk

It’s easy to think many of the birds we see and hear look and act the same. But do they? Bring your binoculars and join us on a slow/medium paced walk in OC Parks’ Irvine Ranch Open Space, as we search for resident and visiting birds of the local coastal sage scrub, oak woodland, riparian, and grassland habitats. We will discuss the diverse features of the birds we observe and how they match the season, their habitat and lifestyle. We will travel mostly on ranch roads, usually without shade. Beginners to advanced bird enthusiasts are welcome. Please wear sturdy shoes suitable for hiking and bring water, along with sun protection such as a hat and sunscreen. Bring a small birding field guide if you have one. A few binoculars will be available to borrow.
Monday Morning Super Trek: Bommer Canyon and Crystal Cove

Come start your week with us on our Super Treks in the Irvine Open Space Preserve. Join us as we explore Bommer Canyon and Crystal Cove State Park. After hiking up to Bommer Ridge, we drop down and loop through Crystal Cove State Park. Along the way, we will be rewarded with views of the ocean and spectacular canyons. There will be several steep ascents and descents.
Participants must be able to hike 11 miles with an elevation gain of 1800 feet at an average moving rate of 3 miles per hour. All participants must carry their own water! Please come prepared with a pack, plenty of water, snacks, sturdy closed-toe hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail. Under-prepared participants may be denied access to the event.
After Work Fitness Hike on Paved Hicks Haul Road

Join us every Monday night for a fitness-focused hike on the paved Hicks Haul Road in the Irvine Open Space Preserve. 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 about 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.
Tuesday, May 6, 2025
Tuesday Morning Fitness Hike on Paved Hicks Haul Road

Ready for a workout? Forget the gym for the day and head outside! Join us for an exhilarating morning fitness hike on the paved Hicks Haul Road in OC Parks’ Irvine Ranch Open Space. This hike allows you to choose between a 3, 6, or 8 mile route, all of which are conducted at the speed of about 3.0 to 3.5 miles per hour. The footing on the asphalt paved road is smoother than dirt roads and single track trails normally found in Limestone Canyon Nature Preserve, but is beginning to show its age with cracks, crevices and an occasional dip. Otherwise, the terrain is smooth, so this is a great walk for anyone who wants a “wilderness experience” without getting dirty! The 6 and 8 mile routes experience two fairly steep ascents and descents. The 3 mile route takes you to the top of Loma Ridge and back down. Along the way, you will have sweeping views of much of Orange County and the Santa Ana Mountains. Various animals, like hawks, deer, and lizards are also frequently seen in this area.
Buck Gully Loop Hike

Come and explore Newport Beach’s Buck Gully Reserve trail system. Beginning from the Oasis Senior Center, we’ll hike up through the almost 3-mile length of the canyon, then along San Joaquin Hills Road for a bit, stopping at Canyon Watch Park where we will take in the panoramic view of the reserve and the Pacific coastline before descending back into the canyon along the Bobcat Trail. Please bring water, a light trail snack, sturdy closed-toe shoes and supplies to keep you safe during the journey. Sunscreen and a hat are highly recommended. This activity is conducted at a walking pace, approximately 3 miles per hour.
Enjoy Nature’s Story, Vistas, and Special Places – Beginner Hike to Top of Red Rock Ridge

Embark on a leisurely beginner’s hike among the easy rolling hills of Red Rock Wilderness, nestled within OC Parks’ Irvine Ranch Open Space. Traverse the rugged terrain on former ranch roads, surrounded by the woodlands, grand oak trees and the vast stretches of Coastal Sage Scrub. We’ll use small trails to ascend to the top of Red Rock Ridge for grand views. Total round-trip distance is 3.5 miles with an elevation gain of 500 feet at an average moving rate of 2.0-2.5 miles per hour. Please come prepared with a backpack, plenty of water, snacks, sturdy closed-toe hiking shoes or boots, sunscreen, first aid kit, and all other supplies to keep you safe and healthy on the trail. Each hiker must carry their own water and supplies.
Nurturing Oaks in Weir Canyon

Spend the morning in a beautiful oak woodland watering Coast Live Oak seedlings and native plants in Weir Canyon. To get to the planting site we will travel for 15 minutes in a safari style truck giving you majestic views of Weir Canyon. We may be using shovels and small handheld tools. No experience necessary.
Takedown Tuesdays: Weeding at the Native Seed Farm

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 this evening activity, attendees will learn about one to two (1-2) target species before assisting staff in weeding efforts around our native plant crops. 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!
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 Ranch Open Space, 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.
Wednesday, May 7, 2025
Early Morning Distance Hike into Red Rock Wilderness

Come along with us on this scenic distance hike across Loma Ridge into the newly opened Red Rock Wilderness, part of OC Parks’ Irvine Ranch Open Space. This hike involves numerous ups and downs on groomed and maintained trails and is done at a moderate moving pace of around 3 mph. As we pass across the top of the Red Rocks, the panoramic view of the surrounding area is nothing short of spectacular.
Weir Canyon Hike to the Overlook Trail

Join us as we explore Weir Canyon. We will hike up over Rifle Range and continue to the Overlook Trail where we will be rewarded with sweeping views of the Irvine Ranch Natural Landmarks and more distant views of the Palos Verdes Peninsula, Los Angeles Basin, and Cleveland National Forest. We will return through a beautiful oak woodland. Please wear hiking shoes/boots and bring water, a trail snack, sunscreen, hat, and any other necessary equipment to keep you safe on the trail. Each hiker must carry their own water and supplies. A red-tinted flashlight or headlamp is recommended. Participants must be able to hike 9+ miles with an accumulated elevation gain of 1800 feet at an average moving rate of 3 miles per hour.
Tot Trails

Explore the natural wonders of Irvine Regional Park with OC Parks! Join us on the first Wednesday of each month from 10-11 a.m. for a variety of kid friendly hikes and talks.
This program will begin at parking lot J. Program content is tailored for ages 2 to 6, but all are welcome to attend. Water, comfortable attire and closed-toe shoes are recommended. Strollers are not recommended for this month’s hike.
Inclement weather may cancel the program.
Advance registration is required.
For questions, please contact Resource Specialist Shelly Marshall at shelly.marshall@ocparks.com.
Adaptation Spotlight: Butterfly Wings

Discover the fascinating world of butterfly wings! In this interactive program, we’ll explore how butterfly wings get their stunning colors, how wing shapes affect butterflies’ survival and flight, and will go on a hike to see if we can find and ID the butterflies that call the James Dilley Preserve home. Join us for a closer look at the beauty, biology, and brilliance of butterfly wings! This program will be hiking about 1 mile.
Age: 7 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: 1/5
Materials: Participants must bring plenty of water, 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. 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 shelbi.richardson@ocparks.com with any questions.
Weather, including high temperatures and wet or muddy trail conditions, may lead to cancellation of this event.
After Work Cardio Hike in Limestone Canyon – Shoestring & Sandtrap

Leave the weekday chaos behind and dive into the peaceful beauty of OC Parks’ Limestone Canyon with our energizing after-work cardio hike. Forget about the day’s worries as we trek through stunning landscapes, breathing in the fresh air and taking in the scenic views. Come along for a journey through winding paths and picturesque vistas, where we can recharge and refresh ourselves in the tranquility of nature.
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.
Sunset Hike in Orchard Hills

Come out and enjoy the sunset 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.
Thursday, May 8, 2025
Thursday Morning Trek: Quail Hill

This week in the Irvine Open Space Preserve, we’ll be in Quail Hill, once part of the historic Irvine cattle ranch. The hike is seven and a half miles with some climbing but rewards you with fantastic views overlooking Laguna Canyon and many Irvine locales. Please bring water, a trail snack, sunscreen, hat and any other necessary equipment to keep you safe on the trail. Get your boots out and register to hike the Quail Trail and Shady Canyon singletrack trails.