Activities and Programs

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.

Irvine Ranch Conservancy is committed to providing a safe and respectful environment for all participants, volunteers, and employees. Certain offensive behaviors, including problematic language or attacks based on race, color, religion, national origin, sex, sexual orientation, gender identity or expression, age, disability, or veteran status will not be tolerated. Participating in certain offensive behaviors may lead to dismissal from activities.
    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

Found 477 Events

Tuesday, August 12, 2025

Tuesday Morning Fitness Hike on Paved Hicks Haul Road

Hiking & Fitness
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.

Tuesday Morning Fitness Hike on Paved Hicks Haul Road
Date:
Tue, 08/12/2025
Time:
7:30 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
8 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 07/28/2025
More Information  

Takedown Tuesdays: Weeding at the Native Seed Farm

Stewardship
Takedown Tuesdays: Weeding 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 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!

Takedown Tuesdays: Weeding at the Native Seed Farm
Date:
Tue, 08/12/2025
Time:
5:00 pm - 6:30 pm
Where:
Native Seed Farm OCP
Difficulty Rating:
3
Minimum Age:
14
Spaces Left:
Registration for this event opens at 8:00am on 07/28/2025
More Information  

Evening Hike on Hicks Haul Road

Hiking & Fitness
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.

Evening Hike on Hicks Haul Road
Date:
Tue, 08/12/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 07/28/2025
More Information  

Limestone and Red Rock Night Ride

Mountain Biking
Limestone and Red Rock Night Ride

Join us for an evening/night mountain bike ride through Limestone Canyon Nature Preserve and Red Rock Wilderness, part of OCParks’ Irvine Ranch Open Space. We will ride approximately 12 miles, with 1500′ of climbing along a variety singletrack trails and ranch roads. The route will vary based on trail conditions/availability.

This ride is not recommended as a first time night ride. Bring adequate lights, a jacket, plenty of water, spare tubes, tools and all other equipment to be self-sufficient on the trails. Hopefully we will see some of our local nocturnal critters. Motorized recreation vehicles of any class or type are not permitted for use in the Nature Preserve.

Limestone and Red Rock Night Ride
Date:
Tue, 08/12/2025
Time:
6:00 pm - 8:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
12 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 07/28/2025
More Information  

Wednesday, August 13, 2025

Biking the Bay

Mountain Biking
Biking the Bay

Join OC Parks for an interpretive bike ride around Upper Newport Bay! Participants will have the opportunity to get their heart rate up and pedal around the Bay, all while learning about local ecology and history.

This moderately-paced ride will cover a 10 mile section of the Back Bay Loop trail over the course of 2 and a half hours. We will remain on the paved portion of the trail and will have interpretative stops along the way.

Participants must provide their own bike and helmet. E-bikes are welcome. Please note that the pace and talking points are geared towards individuals aged 14 and up. Minors must have a parent/guardian present at all times.

Distance: 10 miles
Elevation Change: 155 feet

Advance registration required. The parking and program are free. Rain or adverse weather will cancel the event.

Biking the Bay
Date:
Wed, 08/13/2025
Time:
7:30 am - 10:00 am
Where:
Upper Newport Bay
Difficulty Rating:
2
Minimum Age:
14
Spaces Left:
Registration for this event opens at 6:00am on 07/13/2025
More Information  

Hiking 101: Trail Tips for Beginners – Buck Gully

Hiking & Fitness
Hiking 101: Trail Tips for Beginners - Buck Gully

Hiking is a great way to connect to nature and stay healthy and active. If you are new to the outdoors, it can be difficult to know where to begin. Come out to Buck Gully, part of the City of Newport Beach’s Irvine Ranch Open Space Preserve, and start your hiking journey, or continue your existing one, on the right foot. Hiking 101 will help you understand gear, build your knowledge and skills and provide tips to assist you out on the trails. We will lead you through the basics of hiking: defining your hiking goals, packing appropriately, understanding and minimizing risks, and practicing proper trail etiquette. The activity will include a packing demonstration and a hike through our wildlands. No experience is necessary for this activity. 

Hiking 101: Trail Tips for Beginners - Buck Gully
Date:
Wed, 08/13/2025
Time:
9:00 am - 11:30 am
Where:
Buck Gully Reserve
Difficulty Rating:
2
Distance:
2 miles
Minimum Age:
6
Spaces Left:
Registration for this event opens at 8:00am on 07/28/2025
More Information  

Jr. Ranger Adventure: William Mason Regional Park

Interpretive
Jr. Ranger Adventure: William Mason Regional Park

The OC Parks Jr. Ranger Program encourages park guests to explore the outdoor world within OC Parks by developing a sense of belonging, becoming a part of nature and feeling empowered to be stewards of Orange County’s natural and cultural resources.

Earn yourself a William Mason Regional Park Jr. Ranger Badge by completing this Jr. Ranger adventure! We will be learning about what makes an animal invasive and watching the behavior of Mason’s turtles.

Age: Designed for 8 to 12 years of age, but all are welcome to participate. Participants under 18 must be accompanied by a parent or guardian.

Location: Mason Regional Park at 18712 University Drive, Irvine (Exit I-405 at Culver Drive south, turn right (west/south) on University Drive, left at San Joaquin/park entrance – meet at the western end of Parking Lot A).

Parking: $5/car at Mason Regional Park 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.
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.

Jr. Ranger Adventure: William Mason Regional Park
Date:
Wed, 08/13/2025
Time:
3:00 pm - 4:30 pm
Where:
Mason Regional Park
Difficulty Rating:
2
Minimum Age:
8
More Information  

After Work Fitness Hike on Paved Hicks Haul Road

Hiking & Fitness
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.

After Work Fitness Hike on Paved Hicks Haul Road
Date:
Wed, 08/13/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 07/29/2025
More Information  

Thursday, August 14, 2025

Thursday Morning Trek: Limestone Canyon and Dripping Springs

Hiking & Fitness
Thursday Morning Trek: Limestone Canyon and Dripping Springs

This week in OC Parks’ Irvine Ranch Open Space, we’ll hike in Limestone Canyon to Dripping Springs. The hike is a 7-mile loop hike which includes some hills and descents. In addition to the springs, we will enjoy panoramic views of the wildlands from East Loma. Please bring water, a trail snack, sun screen, hat, and any other necessary equipment to keep you safe on the trail, and wear sturdy, closed-toe hiking boots. Participants must be able to hike 7 miles with an elevation gain of 1300 feet at an average moving rate of 3 miles per hour. Each hiker must carry his/her own water and supplies.

Thursday Morning Trek: Limestone Canyon and Dripping Springs
Date:
Thu, 08/14/2025
Time:
7:00 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
7 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 07/30/2025
More Information  

Butterfly Series: Limestone Canyon Butterfly Habitat Islands

Stewardship
Butterfly Series: Limestone Canyon Butterfly Habitat Islands

Spend your morning helping to remove weeds and rebuild berms within the butterfly habitat islands in Limestone. With your help we will be able to maintain “islands” of host and nectar plants for butterflies in decline in Limestone Canyon. You will be transported from via a safari style truck from butterfly island to butterfly island through a beautiful oak woodland.

Butterfly Series: Limestone Canyon Butterfly Habitat Islands
Date:
Thu, 08/14/2025
Time:
8:00 am - 11:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
2 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 07/30/2025
More Information  

What’s Buzzing at the Native Seed Farm? Native Plants and their Pollinators!

Interpretive
What's Buzzing at the Native Seed Farm? Native Plants and their Pollinators!

Join us as we explore the native seed farm while learning about plants, pollination, and pollinators. We’ll focus on the native plants grown at the farm as we talk about, and identify, the pollinators we find on them. Closed-toe shoes and water are required for the walk. Hats and sunscreen highly recommended.

What's Buzzing at the Native Seed Farm? Native Plants and their Pollinators!
Date:
Thu, 08/14/2025
Time:
9:30 am - 11:00 am
Where:
Native Seed Farm OCP
Difficulty Rating:
2
Distance:
1 miles
Minimum Age:
10
Spaces Left:
Registration for this event opens at 8:00am on 07/30/2025
More Information  

Evening Hike on Hicks Haul Road

Hiking & Fitness
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.

Evening Hike on Hicks Haul Road
Date:
Thu, 08/14/2025
Time:
6:00 pm - 7:30 pm
Where:
Irvine Open Space Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 07/30/2025
More Information  

Friday, August 15, 2025

Growing Together at the Native Seed Farm

Stewardship
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! 

Growing Together at the Native Seed Farm
Date:
Fri, 08/15/2025
Time:
8:00 am - 11:00 am
Where:
Native Seed Farm OCP
Difficulty Rating:
2
Minimum Age:
8
Spaces Left:
Registration for this event opens at 8:00am on 07/31/2025
More Information  

Summer Morning Yoga Hike at Quail Hill

Hiking & Fitness
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.

Summer Morning Yoga Hike at Quail Hill
Date:
Fri, 08/15/2025
Time:
8:00 am - 11:00 am
Where:
Quail Hill
Difficulty Rating:
2
Distance:
2 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 12:00am on 07/31/2025
More Information  

Seasonal Science Series: Intro to iNaturalist at the Butterfly Enhancement Project

Community Science
Seasonal Science Series: Intro to iNaturalist at the Butterfly Enhancement Project

Be part of a hiking series inspired by current IRC projects in research, monitoring, and conservation. This rotating series highlights different areas of the landscape depending on the season and ongoing projects.

In this session, we’ll spend the morning exploring Limestone Canyon, observing local plants and animals, and learning how to identify them using the iNaturalist app.

Before arriving, please download the free iNaturalist app and create an account on your smartphone to fully participate in the activity.

During the hike, we’ll stop at 2–3 butterfly monitoring plots for 5–10 minutes each to document the flora and fauna we encounter using the app. It’s a great opportunity to contribute to community science while deepening your connection to the land.

Seasonal Science Series: Intro to iNaturalist at the Butterfly Enhancement Project
Date:
Fri, 08/15/2025
Time:
8:30 am - 11:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
2.5 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 07/31/2025
More Information  

Baker Canyon Equestrian Ride in Black Star Wilderness Area

Equestrian
Baker Canyon Equestrian Ride in Black Star Wilderness Area

Take a leisurely equestrian ride through beautiful Baker Canyon in the Black Star Wilderness Area, home of oak woodlands, grasslands, and coastal sage scrub.  View evidence of the old ranch days when cattle once roamed the area and see some of the wildflowers that are native to our area.  You will gain amazing views of the local canyons and Irvine Lake.

Baker Canyon Equestrian Ride in Black Star Wilderness Area
Date:
Fri, 08/15/2025
Time:
10:00 am - 2:00 pm
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
11
Spaces Left:
Registration for this event opens at 8:00am on 07/31/2025
More Information  

Wild Tales

Interpretive
Wild Tales

Spending time outside is one of the best ways to nurture curiosity and instill a love of the natural world. Bring your young ones and join OC Parks staff to learn all about the Newport Back Bay.

Our Wild Tales program is offered every Friday from 10:00-11:00am and includes a story time, an age-appropriate hike, and a themed craft. Each week will focus on a different topic that encourages young ones to learn about the outdoors.

The program begins at the Peter and Mary Muth Interpretive Center. Program content is tailored for the preschool level (ages 2-5), but all are welcome to attend. Minors under age 18 must be accompanied by an adult guardian. Please wear comfortable attire and closed-toe shoes.

Advance registration is REQUIRED. In an effort to keep our program size manageable and engaging for participants, this program no longer accepts walk ups. Program and parking are free.

Adverse weather conditions may move the program indoors or cancel it.

Wild Tales
Date:
Fri, 08/15/2025
Time:
10:00 am - 11:00 am
Where:
Upper Newport Bay
Difficulty Rating:
1
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
Registration for this event opens at 6:00am on 08/01/2025
More Information  

Woodland Wellness Walk

Interpretive
Interpretive

Inspired by the Japanese practice of “shinrin-yoku” or “forest bathing,” this walk invites you to take a break from the busy world and immerse yourself in nature. Throughout the program, you will be encouraged to explore your surroundings using all your senses to deepen your connection with nature.

This is a guided, slow-paced walk with frequent opportunities to meditate and relax, designed for participants 16 and older. Participants are encouraged to bring a yoga mat or other comfortable seating and their favorite tea or water for the closing tea ceremony. Please wear comfortable attire and be prepared to walk on uneven terrain.

The program will begin outside the nature center. Please arrive on time to experience the full sequence of the program.

Registration is required.

Inclement weather will cancel the program.

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

For questions, please contact Resource Specialist Shelly Marshall at 657-253-3681 or shelly.marshall@ocparks.com.

Woodland Wellness Walk
Date:
Fri, 08/15/2025
Time:
10:00 am - 12:00 pm
Where:
Santiago Oaks Regional Park
Difficulty Rating:
1
Minimum Age:
16
Spaces Left:
13 of 15
More Information  

Nature Journaling during the Perseids Meteor Shower

Interpretive
Nature Journaling during the Perseids Meteor Shower

Nature journaling is a wonderful tool for nature observations, creating lasting memories, and making deeper connections with nature. Enjoy the transition from sunset to hopefully catching a glimpse of a shooting star during this season’s Perseids Meteor Shower.

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.

Nature Journaling during the Perseids Meteor Shower
Date:
Fri, 08/15/2025
Time:
7:30 pm - 9:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
1
Distance:
Variable
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 07/31/2025
More Information  

Night Sky Exploration Hike in Red Rock Wilderness

Interpretive
Night Sky Exploration Hike in Red Rock Wilderness

Come take a tour of the night sky, while hiking along the red rocks in Red Rock Wilderness, part of OC Parks’ Irvine Ranch Open Space. We will explore the importance of dark skies and the use of stars for navigation, by wildlife and our ancestors. Please dress in layers, bring water, and come prepared with a pack, sturdy closed-toed hiking shoes or boots, first aid, and all other supplies to keep you safe and healthy on the trail. Each participant should carry their own pack and water. Under-prepared participants may be denied access to this activity. All flashlights must have a red lens or red tinting.

Night Sky Exploration Hike in Red Rock Wilderness
Date:
Fri, 08/15/2025
Time:
8:30 pm - 10:00 pm
Where:
Red Rock Wilderness
Difficulty Rating:
2
Distance:
3.5 miles
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
Registration for this event opens at 8:00am on 07/31/2025
More Information  
7 8 9 10 11 12 13 14 15 16 17 18