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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. No walk-up registrations will be permitted. Minors must be accompanied by a parent or guardian for all events. For policies of other organizations, please see the sign-up information provided.
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Our Activities and Programs

The activities listed are offered by a variety of organizations and their dedicated volunteers. All programs are FREE unless noted otherwise. Programs led by IRC-Certified Volunteers require pre-registration. No walk-up registrations will be permitted. Minors must be accompanied by a parent or guardian for all events. For policies of other organizations, please see the sign-up information provided.
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585 Events Found

Saturday, October 18, 2025

You will enjoy a gorgeous sunset with panoramic views of Orange County while hiking in OC Parks’ Irvine Ranch Open Space on the paved Hicks Haul Road. This hike travels 6 miles, out and back crossing over Loma Ridge. This...

Date:
Sat, 10/18/2025
Time:
4:30 pm - 6:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
6 miles
Minimum Age:
16
Registration:
Registration Opens on 10/03/2025 at 8:00am

The night is full of creepy creatures and scary sounds…unless you know what’s out there! Visit the Oaks after dark to discover which critters call this canyon home. The evening is filled with fun nature stations, creative crafts, scavenger hunt...

Date:
Sat, 10/18/2025
Time:
5:30 pm - 9:30 pm
Where:
Santiago Oaks Regional Park
Difficulty Rating:
1
Minimum Age:
All Ages
Family Friendly:
Yes
Registration:
Registration Opens on 10/01/2025 at 12:00am

Sunday, October 19, 2025

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...

Date:
Sun, 10/19/2025
Time:
6:30 am - 1:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
5
Distance:
17 miles
Minimum Age:
18
Registration:
Registration Opens on 10/04/2025 at 8:00am

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....

Date:
Sun, 10/19/2025
Time:
7:00 am - 10:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
8.5 miles
Minimum Age:
18
Registration:
Registration Opens on 10/03/2025 at 8:00am

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...

Date:
Sun, 10/19/2025
Time:
7:00 am - 11:00 am
Where:
Weir Canyon Nature Preserve
Difficulty Rating:
4
Distance:
9.5 miles
Minimum Age:
16
Registration:
Registration Opens on 10/04/2025 at 8:00am

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...

Date:
Sun, 10/19/2025
Time:
7:30 am - 9:30 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Registration:
Registration Opens on 10/03/2025 at 8:00am

Visitors to IRC’s Native Seed Farm are first greeted by our Demonstration Garden, providing inspiration for regionally suitable plant gardens. Our garden hosts a variety of native plant species which support a healthy local ecosystem! IRC Volunteers are invited to...

Date:
Sun, 10/19/2025
Time:
8:00 am - 11:30 am
Where:
Native Seed Farm OCP
Difficulty Rating:
2
Minimum Age:
18
Registration:
Registration Opens on 10/03/2025 at 8:00am

Join Laguna Canyon Foundation and OC Parks at one of our Land Tending days 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...

Date:
Sun, 10/19/2025
Time:
8:00 am - 11:00 am
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
16

Experienced mountain bikers can explore one of the most rugged and remote areas of OC Parks’ Irvine Ranch Open Space from the trails of Fremont Canyon Nature Preserve on this moderate-paced ride through Fremont, Blind, and Weir Canyons. Fremont Canyon...

Date:
Sun, 10/19/2025
Time:
8:00 am - 11:00 am
Where:
Fremont Canyon Nature Preserve
Difficulty Rating:
4
Distance:
15 miles
Minimum Age:
16
Registration:
Registration Opens on 10/05/2025 at 8:00am

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,...

Date:
Sun, 10/19/2025
Time:
8:00 am - 10:00 am
Where:
Mile Square Regional Park
Difficulty Rating:
1
Minimum Age:
8
Registration:
Registration Opens on 09/19/2025 at 12:00am

Join us on a stroll through Baker Meadow as we look for animal scat. That’s right! The biproduct of the animal’s waste. Find out how this discarded material is used by animals to communicate, protect from predators and the elements,...

Date:
Sun, 10/19/2025
Time:
9:00 am - 11:00 am
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
1
Distance:
2 miles
Minimum Age:
5
Registration:
Registration Opens on 10/04/2025 at 8:00am

Nature journaling is a wonderful tool for nature observations, creating lasting memories, and making deeper connections with nature. Take a closer look at animal bones and skulls to discover the fascinating details that make each animal unique. Build upon your...

Date:
Sun, 10/19/2025
Time:
10:00 am - 12:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
1
Distance:
0.5 miles
Minimum Age:
5
Family Friendly:
Yes
Registration:
Registration Opens on 10/03/2025 at 8:00am

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...

Date:
Sun, 10/19/2025
Time:
3:30 pm - 6:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
Variable
Distance:
8 miles
Minimum Age:
12
Registration:
Registration Opens on 10/03/2025 at 8:00am

Limestone Canyon is a treasure waiting to be discovered. Join us for an early evening, moderately-paced, 5.5-mile beginning cardio hike. The hike may include a few short rest stops along the way and will be a great introduction to fitness,...

Date:
Sun, 10/19/2025
Time:
5:00 pm - 8:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
5.5 miles
Minimum Age:
18
Registration:
Registration Opens on 10/03/2025 at 8:00am

Come join us for an interactive evening under the stars.  Immerse yourself in a scaled-down version of our solar system.  Test your imagination in naming the constellations.  Reenact the struggle between Orion and the Scorpion.  The hike will average 2-3...

Date:
Sun, 10/19/2025
Time:
5:30 pm - 7:30 pm
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
2
Distance:
3.5 miles
Minimum Age:
5
Family Friendly:
Yes
Registration:
Registration Opens on 10/03/2025 at 8:00am

Monday, October 20, 2025

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...

Date:
Mon, 10/20/2025
Time:
7:30 am - 10:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
3 miles
Minimum Age:
16
Registration:
Registration Opens on 10/05/2025 at 8:00am

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....

Date:
Mon, 10/20/2025
Time:
6:00 pm - 7:30 pm
Where:
Irvine Open Space Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
16
Registration:
Registration Opens on 10/05/2025 at 8:00am

Tuesday, October 21, 2025

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...

Date:
Tue, 10/21/2025
Time:
7:30 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
8 miles
Minimum Age:
16
Registration:
Registration Opens on 10/06/2025 at 8:00am

Join us on a slow-paced hike along the back-country ridges and valleys of Weir Canyon, part of OCParks’ Irvine Ranch Open Space. We’ll travel on rough old ranch roads passing by woodlands of majestic oak trees and expanses of Coastal...

Date:
Tue, 10/21/2025
Time:
8:00 am - 11:00 am
Where:
Weir Canyon Nature Preserve
Difficulty Rating:
3
Distance:
5 miles
Minimum Age:
16
Registration:
Registration Opens on 10/06/2025 at 8:00am

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...

Date:
Tue, 10/21/2025
Time:
9:00 am - 12:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
18
Registration:
Registration Opens on 10/06/2025 at 8:00am
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