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 554 Events

Saturday, May 17, 2025

Wildfire Awareness Series: Explore Your Native Garden

Interpretive
Wildfire Awareness Series: Explore Your Native Garden

For Wildfire Awareness Month spend the time learning about fire dependency, resiliency, and management as we explore the demonstration garden at the Native Seed Farm. Visitors to the Farm are first greeted by the Demonstration Garden, filled with lush shrubs, bushes, and flowers. Our garden hosts a variety of native plant species which support a healthy local ecosystem! Join us as we provide inspiration and guidance for creating a regionally suitable plant garden for your own home.

Wildfire Awareness Series: Explore Your Native Garden
Date:
Sat, 05/17/2025
Time:
11:00 am - 12:30 pm
Where:
Native Seed Farm OCP
Difficulty Rating:
1
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 05/02/2025
More Information  

Modjeska’s Spring Open House: 12:00pm to 2:00pm

Interpretive
Modjeska's Spring Open House: 12:00pm to 2:00pm

Join OC Parks at the annual spring open house at Arden: Helena Modjeska Historic House and Gardens!

Tucked away amidst a live oak grove on the banks of Santiago Creek lies the century-old home of one of the most famous Shakespearean actresses of the late Victorian era – Madame Helena Modjeska. Designed in 1888 by renowned New York architect Stanford White, it’s one of two National Historic Landmarks in Orange County.

Enjoy Shakespearean performances by the Modjeska Shakespeare Players, live music performances by The Orange Town Revival and docent-led tours of the iconic home and grounds. You can even taste one of the famous caramel and marshmallow Modjeska candies!

This event is free with free parking, but reservations are required due to limited parking on-site.

This registration is for the 12:00pm to 2:00pm session.

If you are looking for the 10:00am to 12:00pm session, please use this web address: https://letsgooutside.org/activities/2025/05/17/modjeskas-spring-open-house-1000am-to-1200pm/

If you are looking for the 2:00pm to 4:00pm session, please use this web address: https://letsgooutside.org/activities/2025/05/17/modjeskas-spring-open-house-200pm-to-400pm/

Modjeska's Spring Open House: 12:00pm to 2:00pm
Date:
Sat, 05/17/2025
Time:
12:00 pm - 2:00 pm
Where:
Helena Modjeska Historic House and Gardens
Difficulty Rating:
1
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
150 of 150
More Information  

Modjeska’s Spring Open House: 2:00pm to 4:00pm

Interpretive
Modjeska's Spring Open House: 2:00pm to 4:00pm

Join OC Parks at the annual spring open house at Arden: Helena Modjeska Historic House and Gardens!

Tucked away amidst a live oak grove on the banks of Santiago Creek lies the century-old home of one of the most famous Shakespearean actresses of the late Victorian era – Madame Helena Modjeska. Designed in 1888 by renowned New York architect Stanford White, it’s one of two National Historic Landmarks in Orange County.

Enjoy Shakespearean performances by the Modjeska Shakespeare Players, live music performances by The Orange Town Revival and docent-led tours of the iconic home and grounds. You can even taste one of the famous caramel and marshmallow Modjeska candies!

This event is free with free parking, but reservations are required due to limited parking on-site.

This registration is for the 2:00pm to 4:00pm session.

If you are looking for the 10:00am to 12:00pm session, please use this web address: https://letsgooutside.org/activities/2025/05/17/modjeskas-spring-open-house-1000am-to-1200pm/

If you are looking for the 12:00pm to 2:00pm session, please use this web address: https://letsgooutside.org/activities/2025/05/17/modjeskas-spring-open-house-1200pm-to-200pm/

Modjeska's Spring Open House: 2:00pm to 4:00pm
Date:
Sat, 05/17/2025
Time:
2:00 pm - 4:00 pm
Where:
Helena Modjeska Historic House and Gardens
Difficulty Rating:
1
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
138 of 150
More Information  

Family Hike: Agua Chinon

Interpretive
Family Hike: Agua Chinon

Enjoy an afternoon family hike in Agua Chinon, part of OC Parks’ Irvine Ranch Open Space. We hike a gradual climb of 500 ft elevation as we watch for red-tailed hawks and mule deer.  This activity originates in the City of Irvine and travels into Limestone Canyon Nature Preserve. The hike will average 3 miles round trip at an easy pace with a medium level of interpretation. This program is for participants who would enjoy a slower-paced gradual climb hike. Hikers should be in good health able to do a beginning hike over a variety of terrains. Wear comfortable clothes and sturdy shoes and bring water for the hike. Be ready to enjoy the sounds and smells of early evening.

Family Hike: Agua Chinon
Date:
Sat, 05/17/2025
Time:
5:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
3 miles
Minimum Age:
5
Family Friendly:
Yes
Spaces Left:
Registration for this event opens at 8:00am on 05/02/2025
More Information  

Keep It Wild – Laguna Coast

Stewardship
Keep It Wild - Laguna Coast

Join Laguna Canyon Foundation and OC Parks at one of our habitat restoration stewardship events in Laguna Coast Wilderness Park as we learn and work together to create a healthier habitat for the native plants and wildlife that call the canyon their home. Depending on the time of year, volunteers will assist with various stewardship activities, including removal of non-native plants, seed collection, and/or planting of native plants. No experience is necessary. Come out and join the team to help restore the wild lands we all enjoy!

Age: 16 or older. Participants under 18 must be accompanied by a parent or guardian.

Location: Nix Nature Center, Laguna Coast Wilderness Park (18751 Laguna Canyon Road, Laguna Beach 92651, East side of Laguna Canyon Rd/SR-133).

Parking: Free parking for Keep It Wild volunteers at Nix Nature Center parking lot. Parking is limited, carpooling is encouraged.

Difficulty Rating: 2/5

Materials: Participants must bring plenty of water, closed-toed shoes, long pants, and sun protection. Gloves and tools are 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.

Keep It Wild - Laguna Coast
Date:
Sat, 05/17/2025
Time:
5:30 pm - 7:30 pm
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
16
More Information  

Bats: Heroes of the Night

Interpretive
Bats: Heroes of the Night

As the day starts to settle into the night in OC Parks’ Irvine Ranch Open Space, bats awaken, stir and streak into the evening sky. Come hear fascinating tales of our flying mammal. 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 have a short introductory presentation in the staging area before the walk.

Bats: Heroes of the Night
Date:
Sat, 05/17/2025
Time:
6:45 pm - 8:45 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 05/02/2025
More Information  

Sunday, May 18, 2025

Advanced Distance Hike: Quail Hill

Hiking & Fitness
Advanced Distance Hike: Quail Hill

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. Hike distance is up to 14 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. Over 2800 feet of accumulated climbing elevation is experienced on this route.

Advanced Distance Hike: Quail Hill
Date:
Sun, 05/18/2025
Time:
6:30 am - 12:30 pm
Where:
Quail Hill
Difficulty Rating:
5
Distance:
14 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/03/2025
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, 05/18/2025
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 05/03/2025
More Information  

Sunday Fitness Hike at Hicks Haul

Hiking & Fitness
Sunday Fitness Hike at Hicks Haul

Join us Sunday morning in OC Parks’ Irvine Ranch Open Space for a fitness-focused hike on the Hicks Haul Road, West Loma and Shoestring trails in Limestone Canyon. Hikers will enjoy wonderful views and a panoramic overview of Orange County. The hike starts at Hicks Haul Road staging area and will cover a distance of 8 miles, about 5 miles of the hike is on paved surface and rest on trails. Participants are expected to hike close to 3 miles per hour and come prepared with closed toe hiking boots or shoes, water, trail snacks, sunscreen, hat, day pack or fanny pack, and any other necessary equipment or supplies you might need to keep you safe on this hike.

Sunday Fitness Hike at Hicks Haul
Date:
Sun, 05/18/2025
Time:
7:00 am - 10:00 am
Where:
Loma Ridge Nature Preserve
Difficulty Rating:
4
Distance:
8.5 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/03/2025
More Information  

Weir Canyon Fitness Hike: Oaks to Overlook Loop

Hiking & Fitness
Weir Canyon Fitness Hike: Oaks to Overlook Loop

Enjoy miles of lush oak studded canyons, fascinating rock formations and sweeping views from the Overlook Trail in the tranquility of the Weir Canyon back country, part of OC Parks’ Irvine Ranch Open Space. On a clear day we’ll be rewarded with glorious views of the San Gabriel and Santa Ana mountains. This is a fitness hike and features an 1800 ft accumulated elevation gain. There are multiple steep climbs and steep descents. Please make sure you are in excellent physical condition! You must be able to hike uphill at an average pace of 3 mph without stopping. A backpack and water are required. Please bring snack, sun screen, hat and wear sturdy closed-toe shoes.

Weir Canyon Fitness Hike: Oaks to Overlook Loop
Date:
Sun, 05/18/2025
Time:
7:00 am - 11:00 am
Where:
Weir Canyon Nature Preserve
Difficulty Rating:
4
Distance:
9.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 05/03/2025
More Information  

Land Tending – Berns Canyon Preserve

Stewardship
Land Tending - Berns Canyon Preserve

Join Laguna Canyon Foundation at one of our Land Tending days in Berns Canyon Preserve as we learn and work together to create a healthier habitat for the native plants and wildlife that call the canyon their home. Depending on the time of year, volunteers will assist with various stewardship activities, including removal of non-native plants, hand watering, seed collection, and/or planting of native plants. No experience is necessary. Come out and join the team to help restore the wild lands we all enjoy!

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, West side of highway 133)

Parking: Free parking for Land Tending volunteers at LCF Headquarters. Parking is limited, carpooling is encouraged.

Difficulty Rating: 2/5

Materials: Participants must bring plenty of water, closed-toed shoes, long pants, and sun protection. Gloves and tools are provided. Long sleeves 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 or marjorie@lagunacanyon.org with any questions.

Weather, including high temperatures and wet or muddy trail conditions, may lead to cancellation of this event.

Land Tending - Berns Canyon Preserve
Date:
Sun, 05/18/2025
Time:
8:00 am - 11:00 am
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
16
More Information  

Guided Interpretive Hike

Interpretive
Guided Interpretive Hike

Come enjoy an easy, 2.5-mile hike over easy but uneven terrain with approximately 50 feet of elevation gain. We will have interpretive stops along the way to learn about the Bay, as well as the plants and animals that call it home. We will be moving at a moderate pace.

Please bring water, snacks, and sun protection as needed. This program is geared towards those 8 and up. Individuals 16 and under must be accompanied by an adult.

The program and parking are free. Adverse weather may cancel the program.

Walk-ups are welcome, but advance registration is recommended.

Guided Interpretive Hike
Date:
Sun, 05/18/2025
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 04/18/2025
More Information  

Weekly Nature Area Clean Up

Stewardship
Stewardship

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, 05/18/2025
Time:
9:00 am - 11:00 am
Where:
Mile Square Regional Park
Difficulty Rating:
1
Minimum Age:
8
Spaces Left:
25 of 25
More Information  

Evening Family Beginner Mountain Bike Ride: Limestone Canyon to The Sinks

Mountain Biking
Evening Family Beginner Mountain Bike Ride: Limestone Canyon to The Sinks

For families and children ages 12 and up who would like to join IRC-certified volunteers in OC Parks’ Irvine Ranch Open Space on a longer, slow-paced, family-oriented ride through sycamores, oaks, and habitat native to California. The route takes us to The Sinks, Orange County’s own “Grand Canyon.” Along the way, we will stop and talk about the local habitat, and hope to see some of our local native animals and raptors. The ride is an 8-9 miles with 400-800 feet of elevation gain that may require hike-a‐bike for some riders. Motorized recreation vehicles of any class or type are not permitted for recreational use.

Evening Family Beginner Mountain Bike Ride: Limestone Canyon to The Sinks
Date:
Sun, 05/18/2025
Time:
5:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
8 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 05/03/2025
More Information  

Monday, May 19, 2025

Bright Birds of Spring in Baker Canyon – Bird Walk

Interpretive
Bright Birds of Spring in Baker Canyon - Bird Walk

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 wintering 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 on ranch roads and single-track trails, 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. You may want to bring a small birding field guide if you have one. A few binoculars will be available to borrow.

Bright Birds of Spring in Baker Canyon - Bird Walk
Date:
Mon, 05/19/2025
Time:
7:30 am - 10:30 am
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 05/04/2025
More Information  

Monday Morning Super Trek: Limestone Canyon to Box Springs and the Sinks

Hiking & Fitness
Monday Morning Super Trek: Limestone Canyon to Box Springs and the Sinks

Come start your week with us on our Super Treks in the Landmarks. Join us as we explore Limestone Canyon, part of OC Parks’ Irvine Ranch Open Space. We will hike across East Loma and enjoy beautiful views of the surrounding hills, out to the coast, and of Irvine Lake. We will continue to Box Springs and the west side of the Sinks before making our return to the staging area. 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. 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.

Monday Morning Super Trek: Limestone Canyon to Box Springs and the Sinks
Date:
Mon, 05/19/2025
Time:
7:30 am - 12:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
11 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/04/2025
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, 05/19/2025
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 05/04/2025
More Information  

Tuesday, May 20, 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, 05/20/2025
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 05/05/2025
More Information  

Enjoy Nature’s Story, Vistas, and Special Places – Intro Hike in Limestone Canyon to West Sinks

Hiking & Fitness
Enjoy Nature's Story, Vistas, and Special Places - Intro Hike in Limestone Canyon to West Sinks

Join us on a slow-paced hike along the back-country ridges and valleys of Limestone Canyon, part of OC Parks’ Irvine Ranch Open Space. We’ll travel on rough old ranch roads passing by woodlands of majestic oak trees and expanses of Coastal Sage Scrub and enjoy wonderful vistas. Total round trip distance is 8 miles with an elevation gain of 700 feet at an average moving rate of 2.0-2.5 miles per hour. Some of the hills are strenuous and 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 in Limestone Canyon to West Sinks
Date:
Tue, 05/20/2025
Time:
8:00 am - 11:30 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 05/05/2025
More Information  

Dripping Springs Trail Restoration

Stewardship
Dripping Springs Trail Restoration

Spend the morning watering and mulching Coast Live Oak seedlings within a beautiful oak woodland and then hike to Dripping Springs, a natural water source dripping out of an earthquake fault and down a gorgeous fern-covered rock face. Your work on the trail will benefit the rare plants and animals that this unique feature supports!

Dripping Springs Trail Restoration
Date:
Tue, 05/20/2025
Time:
9:00 am - 12:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 05/05/2025
More Information