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 562 Events

Friday, May 30, 2025

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 recommended. Program and parking are free.

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

Wild Tales
Date:
Fri, 05/30/2025
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 05/16/2025
More Information  

Jr. Ranger Adventure: Peters Canyon Regional Park

Interpretive
Jr. Ranger Adventure: Peters Canyon 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.

Participants will explore Peters Canyon Regional Park, complete activities and take the OC Parks Jr. Ranger Oath to earn a unique Jr. Ranger badge.

This program will begin at the southern entrance to the the park located at the end of Peters Canyon Rd. near Peters Canyon Elementary School.

This program is designed for ages 7 to 12, but all are welcome.

Minors must be accompanied by a parent or guardian during the program. Sunscreen, sturdy footwear and water are recommended.

The program is free and parking in the lot is $3 on weekdays. Inclement weather will cancel the program.

Advance registration is required. Learn more and register here.

For questions, please contact Resource Specialist Shelly Marshall at shelly.marshall@ocparks.com.

Jr. Ranger Adventure: Peters Canyon Regional Park
Date:
Fri, 05/30/2025
Time:
3:30 pm - 5:00 pm
Where:
Peters Canyon Regional Park
Difficulty Rating:
1
Minimum Age:
All Ages
Spaces Left:
Registration for this event opens at 12:00am on 05/16/2025
More Information  

Saturday, May 31, 2025

Advanced Cardio Hike: Red Rock Wilderness

Hiking & Fitness
Advanced Cardio Hike: Red Rock Wilderness

Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Red Rock Wilderness part of OC Parks’ Irvine Ranch Open Space. Along the way we’ll be rewarded with panoramic views and possible wildlife sightings.  This is an 9-mile cardio hike, completed in 2.5+ hours, includes a 1000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents. This hike is much faster than a regular walking hike. We average four (4) miles per hour, fast-paced and is extremely difficult over steep terrain in the wilderness setting.

Advanced Cardio Hike: Red Rock Wilderness
Date:
Sat, 05/31/2025
Time:
6:30 am - 9:00 am
Where:
Red Rock Wilderness
Difficulty Rating:
5
Distance:
9 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/16/2025
More Information  

Upper Newport Bay Habitat Stewards

Stewardship
Upper Newport Bay Habitat Stewards

Join Upper Newport Bay Nature Preserve staff and volunteers in enhancing the Bay’s 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, refillable water bottle, etc. Water and tools are provided.

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

The program and parking are free. Rain will cancel the event.

Space is limited, so please register to reserve your space (especially for groups.) Walk-ins are welcome but will be accepted based on availability.

Upper Newport Bay Habitat Stewards
Date:
Sat, 05/31/2025
Time:
9:00 am - 11:00 am
Where:
Upper Newport Bay
Difficulty Rating:
1
Minimum Age:
8
Spaces Left:
Registration for this event opens at 6:00am on 04/30/2025
More Information  

Family Hike: Round Canyon

Interpretive
Family Hike: Round Canyon

Enjoy nature with friends and family in Round Canyon. We hike along a fairly flat trail as we watch for red-tailed hawks and mule deer. This activity originates in the City of Irvine and travels into OC Parks’ Irvine Ranch Open Space. The hike averages 2-3 miles round trip at an easy pace with a medium level of interpretation. This program is for participants who would like a slower-paced and level hike. Wear comfortable clothes and sturdy shoes and bring water for the hike.

Family Hike: Round Canyon
Date:
Sat, 05/31/2025
Time:
5:00 pm - 7:30 pm
Where:
Irvine Open Space Preserve
Difficulty Rating:
2
Distance:
2.5 miles
Minimum Age:
5
Family Friendly:
Yes
Spaces Left:
Registration for this event opens at 8:00am on 05/16/2025
More Information  

Bats: Heroes of the Night

Interpretive
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.

Bats: Heroes of the Night
Date:
Sat, 05/31/2025
Time:
7:30 pm - 9:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
1
Distance:
2 miles
Minimum Age:
5
Spaces Left:
Registration for this event opens at 8:00am on 05/16/2025
More Information  

Sunday, June 1, 2025

Early Morning Double Loop Hike: Baker Canyon

Hiking & Fitness
Early Morning Double Loop Hike: Baker Canyon

Come explore OCParks’ Irvine Ranch Open Space. This scenic hike involves steep climbs and descents on both double and singletrack trails and around 1100’ of accumulated climbing elevation. Though challenging, the hike rewards you with sweeping views of the Irvine Ranch Natural Landmarks and Santa Ana Mountains. On clear days you can see Catalina Island and even beyond Orange County into the Los Angeles Basin.

Early Morning Double Loop Hike: Baker Canyon
Date:
Sun, 06/01/2025
Time:
6:30 am - 9:30 am
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
4
Distance:
7 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/17/2025
More Information  

Ultra Distance Hike: Bommer Canyon

Hiking & Fitness
Ultra Distance Hike: Bommer Canyon

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.

Ultra Distance Hike: Bommer Canyon
Date:
Sun, 06/01/2025
Time:
6:30 am - 12:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
5
Distance:
17 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/17/2025
More Information  

Bommer Canyon East Fork and Ridge Route Loop Hike

Hiking & Fitness
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.

Bommer Canyon East Fork and Ridge Route Loop Hike
Date:
Sun, 06/01/2025
Time:
7:00 am - 9:30 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 05/17/2025
More Information  

Intermediate Mountain Bike Ride from Irvine to Limestone Canyon

Mountain Biking
Intermediate Mountain Bike Ride from Irvine to Limestone Canyon

We start our ride through OC Parks’ Irvine Ranch Open Space on the paved Hicks Haul Road, the extension of Jeffrey Rd north of Portola Pkwy. As we warm up on the climb to the top of the road, we enjoy increasingly beautiful views over Irvine. We then follow Loma Ridge to the East, with fantastic vistas of Orange County, the surrounding wildlands, and even Catalina Island on clear days. From Loma Ridge, we descend on a single track to Box Springs which provides year-round water for wildlife like deer.

After the springs, we continue to the Sinks, Orange County’s own “Grand Canyon,” where we enjoy our snacks during a short break. On our way back, we ride along Limestone Ridge, a fun singletrack that leads us towards the Augustine Staging area, enjoying views of Saddleback and Santiago Canyon. From there we will climb back up to Loma Ridge, and then coast back down on the paved Hicks Haul Road to our starting point. Motorized recreation vehicles of any class or type are not permitted for use in the Nature Preserve.

Intermediate Mountain Bike Ride from Irvine to Limestone Canyon
Date:
Sun, 06/01/2025
Time:
7:00 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
16 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/17/2025
More Information  

Let’s Go Hiking!

Hiking & Fitness
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.

Let's Go Hiking!
Date:
Sun, 06/01/2025
Time:
8:30 am - 11:00 am
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
3
Minimum Age:
12
More Information  

Rocks are Rad: Geology Hike at Black Star Canyon

Interpretive
Rocks are Rad: Geology Hike at Black Star Canyon

Join us for a morning walk to one of the Irvine Ranch Natural Landmarks’ iconic geologic features. We will walk out to the red-faced cliffs of Black Star Canyon.  The early morning light from the sun will make for striking pictures of this geological treat.  We will cross the dry Silverado Creek and examine its effects on the local geology.  Then, we will stop at the red rock cliffs and discuss its formation and its future.  Finally, we will stop at an alluvial fan and talk about how it came to be.  This hike is geared towards families with curious minds.

Rocks are Rad: Geology Hike at Black Star Canyon
Date:
Sun, 06/01/2025
Time:
9:00 am - 11:30 am
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
2
Distance:
3.5 miles
Minimum Age:
8
Spaces Left:
Registration for this event opens at 8:00am on 05/17/2025
More Information  

Weekly Nature Area Clean Up

Stewardship
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

Weekly Nature Area Clean Up
Date:
Sun, 06/01/2025
Time:
9:00 am - 11:00 am
Where:
Mile Square Regional Park
Difficulty Rating:
1
Minimum Age:
12
Spaces Left:
25 of 25
More Information  

Monday, June 2, 2025

Hike from “Gills to the Hills” – Crystal Cove Perimeter of the Park

Hiking & Fitness
Hike from "Gills to the Hills" - Crystal Cove Perimeter of the Park

Ready for a challenging hike to tour the Crystal Cove State Park backcountry? Join a Crystal Cove State Park docent as we go from the “gills to the hills” on this strenuous but very scenic loop hike known as the “Perimeter of the Park.” Distance is around 9 miles; elevation/gain loss, around 1500’. The hike is done at a moderate pace with two to three short breaks.

Occasionally, we may vary our route to explore other backcountry trails within the park. 

Hike from "Gills to the Hills" - Crystal Cove Perimeter of the Park
Date:
Mon, 06/02/2025
Time:
7:00 am - 11:00 am
Where:
Crystal Cove State Park
Difficulty Rating:
4
Minimum Age:
16
More Information  

Bright Birds of Spring in Saddleback Wilderness – Bird Walk

Interpretive
Bright Birds of Spring in Saddleback 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.

Bright Birds of Spring in Saddleback Wilderness - Bird Walk
Date:
Mon, 06/02/2025
Time:
7:30 am - 10:30 am
Where:
Saddleback Wilderness
Difficulty Rating:
2
Distance:
3.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 05/18/2025
More Information  

The Lure and Lull of Red Rock Wilderness Equestrian Ride

Equestrian
The Lure and Lull of Red Rock Wilderness Equestrian Ride

Take a leisurely equestrian ride through beautiful Red Rock Wilderness, part of OC Parks’ Irvine Ranch Open Space, home of oak woodlands, grasslands, and coastal sage scrub.  View beautiful geological formations and see plants that are native to our area.  You will be touring the beautiful Natural Landmarks. Equestrians must have their own horse, trail riding experience, and the ability to transport their horse to the staging area.

The Lure and Lull of Red Rock Wilderness Equestrian Ride
Date:
Mon, 06/02/2025
Time:
10:00 am - 2:00 pm
Where:
Red Rock Wilderness
Difficulty Rating:
4
Distance:
7 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/18/2025
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 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.

After Work Fitness Hike on Paved Hicks Haul Road
Date:
Mon, 06/02/2025
Time:
6:00 pm - 7:30 pm
Where:
Irvine Open Space Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 05/18/2025
More Information  

Tuesday, June 3, 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, 06/03/2025
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 05/19/2025
More Information  

Bridges of Buck Gully Hike

Hiking & Fitness
Bridges of Buck Gully Hike

Be inspired by both the natural beauty and recent history of Newport Beach’s Buck Gully Reserve, as we explore this protected area and the collaboration that made it possible. Buck Gully is a natural coastal canyon that opened to the public in 2012 with the installation of four bridges to provide safe public access. The bridges allow exploration of the entire Buck Gully Reserve, and also provide unique vantages and viewing platforms from which to pause and observe the abundant life in and around the stream that runs through the gully year-round. Our guided program starts with a short walk from the Oasis Senior Center to the beginning of the Buck Gully trail, with a visually dramatic entrance into this special canyon. We’ll cross two bridges on the first section of our walk, and then enter the canopied singletrack portion of the trail as we pass by the third bridge. At the fourth and last bridge, we will pause to enjoy the shaded beauty of this hidden refuge, and then retrace our route back to the Oasis.

Bridges of Buck Gully Hike
Date:
Tue, 06/03/2025
Time:
8:00 am - 11:30 am
Where:
Buck Gully Reserve
Difficulty Rating:
3
Distance:
4 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 05/19/2025
More Information  

Enjoy Nature’s Story, Vistas, and Special Places – Intro Hike to Dripping Springs

Hiking & Fitness
Enjoy Nature's Story, Vistas, and Special Places - Intro Hike to Dripping Springs

Join us on a slow-paced hike along the back-country roads and secluded valleys of Limestone Canyon, part of OC Parks’ Irvine Ranch Open Space. We’ll travel starting on a rough old ranch road passing by woodlands of majestic oak trees and expanses of Coastal Sage Scrub. Then we’ll transition to smaller trails headed into a small canyon ending at Dripping Springs, a dramatic wall of dripping water and ferns. Total round trip distance is 5.5 miles with an elevation gain of 400 feet at an average moving rate of 2.0-2.5 miles per hour. The hills are not too strenuous, but we will take breaks as needed. Participants should be in good hiking condition and have previously completed a similar distance hike. Please come prepared with a backpack, plenty of water (at least 1 liter), 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. Under-prepared participants may be denied access to the event.

Enjoy Nature's Story, Vistas, and Special Places - Intro Hike to Dripping Springs
Date:
Tue, 06/03/2025
Time:
8:00 am - 11:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
5.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 05/19/2025
More Information