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 228 Events

Sunday, December 29, 2024

Family Hike

Hiking & Fitness
Family Hike

Join Laguna Canyon Foundation Volunteer naturalists in partnership with OC Parks to enjoy an easy, 2.5-mile Family Hike over moderate but uneven terrain (45-ft. elevation gain). Starting at the James Dilley Preserve, we will hike one of the most diverse areas of Laguna Coast Wilderness Park to Barbara’s Lake and back.

Age: 6 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: 2/5

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.

Family Hike
Date:
Sun, 12/29/2024
Time:
3:00 pm - 5:00 pm
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
6
More Information  

Sunday, January 5, 2025

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, 01/05/2025
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  

Sunday, January 12, 2025

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, 01/12/2025
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  

Saturday, January 18, 2025

Backcountry Patrol Training

Interpretive
Backcountry Patrol Training

The OC Parks’ Backcountry Patrol volunteers share trail etiquette, answer questions about the park, monitor trail maintenance, and scope out trail details at Park Staff’s request. This role can overlap with Trail Ambassador Volunteer role, which provides positive educational interactions between representatives of OC Parks and trail users while delivering a message that reflects the importance of trail safety and responsible trail use to park visitors.

Backcountry Patrol Volunteers can explore more of the park’s vast trail system to connect with visitors throughout the park. Trail Ambassador opportunities are primarily stationary (at trailheads or booth) or limited hiking to best connect with park visitors.

This training takes place half the time in the classroom for discussion and group activity, with the second half walking the trails for field experience. Please be prepared for partial hiking.

For questions, please contact Resource Specialist Shelly Marshall at shelly.marshall@ocparks.com or (714) 973-6625.

Backcountry Patrol Training
Date:
Sat, 01/18/2025
Time:
8:00 am - 12:00 pm
Where:
Santiago Oaks Regional Park
Difficulty Rating:
1
Minimum Age:
12
More Information  

Sunday, January 19, 2025

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, 01/19/2025
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  

Sunday, January 26, 2025

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, 01/26/2025
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  

Sunday, February 2, 2025

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, 02/02/2025
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  

Sunday, February 9, 2025

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, 02/09/2025
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  

Sunday, February 16, 2025

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, 02/16/2025
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  

Sunday, February 23, 2025

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, 02/23/2025
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  

Sunday, March 2, 2025

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, 03/02/2025
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  

Sunday, March 9, 2025

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, 03/09/2025
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  

Sunday, March 16, 2025

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, 03/16/2025
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  

Sunday, March 23, 2025

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, 03/23/2025
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  

Sunday, March 30, 2025

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, 03/30/2025
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  

Sunday, April 6, 2025

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, 04/06/2025
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  

Sunday, April 13, 2025

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, 04/13/2025
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  

Sunday, April 20, 2025

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, 04/20/2025
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  

Sunday, April 27, 2025

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, 04/27/2025
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  

Sunday, May 4, 2025

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, 05/04/2025
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  
6 7 8 9 10 11 12