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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 25, 2025

Join us at the Peter and Mary Muth Interpretive Center for a fun family Halloween party! We will read spooky stories, make creepy crafts, conduct weird science experiments, meet bizarre animals and play hair-raising games. Participants are encouraged to attend...

Date:
Sat, 10/25/2025
Time:
11:00 am - 3:00 pm
Where:
Upper Newport Bay
Difficulty Rating:
1
Minimum Age:
12

Scientists learn a lot about animals from dissections! Join us in dissecting an owl pellet!  Age: 7 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...

Date:
Sat, 10/25/2025
Time:
3:00 pm - 4:00 pm
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
1
Minimum Age:
7

Enjoy an afternoon family hike in Baker Canyon, part of OC Parks’ Irvine Ranch Open Space. We will hike along a flat trail as we watch for red-tailed hawks and mule deer. The hike will average 2 miles round trip...

Date:
Sat, 10/25/2025
Time:
3:30 pm - 3:30 pm
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
2
Distance:
2 miles
Minimum Age:
5
Family Friendly:
Yes
Registration:
Registration Opens on 10/10/2025 at 8:00am

Sunday, October 26, 2025

Come enjoy an early morning hike in Fremont Canyon Nature Preserve, part of OC Parks’ Irvine Ranch Open Space. Our hike climbs steeply from the mouth of Fremont Canyon, past an abandoned coal mine up to the Fremont Weather Station...

Date:
Sun, 10/26/2025
Time:
7:00 am - 9:30 am
Where:
Fremont Canyon Nature Preserve
Difficulty Rating:
4
Distance:
6 miles
Minimum Age:
18
Registration:
Registration Opens on 10/11/2025 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, 10/26/2025
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 10/11/2025 at 8:00am

Experience the beauty of Bommer Canyon that takes you to the back gate of Hogback Ridge, during this moderate-paced, interpretive hike in the Irvine Open Space Preserve. We’ll experience the mature coastal sage scrub and fantastic views overlooking the city...

Date:
Sun, 10/26/2025
Time:
7:30 am - 10:30 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Minimum Age:
12
Registration:
Registration Opens on 10/11/2025 at 8:00am

If you are new to mountain biking and interested in getting started the right way, or if you just want to hone your existing skills developing terrain-influenced bike handling over several types of man-made features, this is the clinic for...

Date:
Sun, 10/26/2025
Time:
8:00 am - 12:00 pm
Where:
Irvine Open Space Preserve
Difficulty Rating:
3
Distance:
2.5 miles
Minimum Age:
16
Registration:
Registration Opens on 10/11/2025 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, 10/26/2025
Time:
8:00 am - 10:00 am
Where:
Mile Square Regional Park
Difficulty Rating:
1
Minimum Age:
8
Registration:
Registration Opens on 09/26/2025 at 12:00am

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...

Date:
Sun, 10/26/2025
Time:
3:00 pm - 5:00 pm
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
6

Limestone Canyon is a treasure waiting to be discovered. Join us for an afternoon, fast paced, 5.5-mile fitness hike with 750 ft of elevation. The hike will be a great introduction to fitness, cardio-style hikes as well as OC Parks’...

Date:
Sun, 10/26/2025
Time:
4:30 pm - 6:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
5.5 miles
Minimum Age:
18
Registration:
Registration Opens on 10/11/2025 at 8:00am

Monday, October 27, 2025

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...

Date:
Mon, 10/27/2025
Time:
7:30 am - 12:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
11 miles
Minimum Age:
18
Registration:
Registration Opens on 10/12/2025 at 8:00am

Join us on this moderate paced fitness hike in OC Parks Red Rock Wilderness Park. We will hike around 8 miles at a 3.5 mph pace through coastal sage brush and see views of the surrounding Limestone and Black Star...

Date:
Mon, 10/27/2025
Time:
4:30 pm - 7:30 pm
Where:
Red Rock Wilderness
Difficulty Rating:
4
Minimum Age:
16
Registration:
Registration Opens on 10/12/2025 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, 10/27/2025
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 10/12/2025 at 8:00am

Tuesday, October 28, 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, 10/28/2025
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 10/13/2025 at 8:00am

Looking for a way to give back to nature this Autumn? 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...

Date:
Tue, 10/28/2025
Time:
5:00 pm - 6:30 pm
Where:
Native Seed Farm COI
Difficulty Rating:
3
Minimum Age:
14
Registration:
14 of 15 Spaces Left

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...

Date:
Tue, 10/28/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
12
Registration:
Registration Opens on 10/13/2025 at 8:00am

Wednesday, October 29, 2025

New to Laguna Coast Wilderness Park? Whether you’re a volunteer, a new hiker, or simply curious about this wild and beautiful landscape, join us for a welcoming orientation hike that will help you get your bearings—both on the trails and...

Date:
Wed, 10/29/2025
Time:
8:30 am - 10:30 am
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
12

Join us as we explore Weir Canyon. We will hike up over Rifle Range and continue to the Overlook Trail where we will be rewarded with sweeping views of the Irvine Ranch Natural Landmarks and more distant views of the...

Date:
Wed, 10/29/2025
Time:
4:00 pm - 7:00 pm
Where:
Weir Canyon Nature Preserve
Difficulty Rating:
4
Distance:
9.5 miles
Minimum Age:
18
Registration:
Registration Opens on 10/14/2025 at 8:00am

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...

Date:
Wed, 10/29/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
16
Registration:
Registration Opens on 10/14/2025 at 8:00am

Thursday, October 30, 2025

This week in OC Parks’ Irvine Ranch Open Space, we’ll hike in the remote Fremont Canyon. The hike is just under 6 miles and includes a steep hill. We will hike from the mouth of Fremont Canyon, past a historic...

Date:
Thu, 10/30/2025
Time:
7:30 am - 10:30 am
Where:
Fremont Canyon Nature Preserve
Difficulty Rating:
4
Distance:
6 miles
Minimum Age:
16
Registration:
Registration Opens on 10/15/2025 at 8:00am