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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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583 Events Found

Sunday, November 30, 2025

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, 11/30/2025
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 11/15/2025 at 8:00am

Visitors to Irvine Ranch Conservancy’s Native Seed 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...

Date:
Sun, 11/30/2025
Time:
11:00 am - 12:30 pm
Where:
Native Seed Farm OCP
Difficulty Rating:
1
Minimum Age:
12
Registration:
Registration Opens on 11/15/2025 at 8:00am

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, 11/30/2025
Time:
3:00 pm - 5:00 pm
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
6

Monday, December 1, 2025

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...

Date:
Mon, 12/01/2025
Time:
7:00 am - 11:00 am
Where:
Crystal Cove State Park
Difficulty Rating:
4
Minimum Age:
16

Birds are among the most colorful and entertaining forms of wildlife on the Irvine Ranch Natural Landmarks. Bring your binoculars and join us on a slow/medium paced walk in OC Parks’ Gypsum Canyon Wilderness, as we search for resident and...

Date:
Mon, 12/01/2025
Time:
7:30 am - 10:30 am
Where:
Gypsum Canyon Wilderness
Difficulty Rating:
1
Minimum Age:
12
Registration:
Registration Opens on 11/16/2025 at 8:00am

Come start your week with us on our Super Treks in the Landmarks as we explore Limestone Canyon and the Red Rock Wilderness. This area exhibits a range of very special geologic formations, has had various historic and recreational uses,...

Date:
Mon, 12/01/2025
Time:
7:30 am - 11:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
10.5 miles
Minimum Age:
16
Registration:
Registration Opens on 11/02/2025 at 12:00am

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. ...

Date:
Mon, 12/01/2025
Time:
9:30 am - 1:30 pm
Where:
Red Rock Wilderness
Difficulty Rating:
3
Distance:
7 miles
Minimum Age:
18
Registration:
Registration Opens on 11/16/2025 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, 12/01/2025
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 11/16/2025 at 8:00am

Tuesday, December 2, 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, 12/02/2025
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 11/17/2025 at 8:00am

Embark on a leisurely beginner’s hike among the easy rolling hills of Red Rock Wilderness, nestled within OC Parks’ Irvine Ranch Open Space. Traverse the rugged terrain on former ranch roads, surrounded by the woodlands, grand oak trees and the...

Date:
Tue, 12/02/2025
Time:
8:00 am - 10:30 am
Where:
Difficulty Rating:
1
Minimum Age:
12
Registration:
Registration Closed

Non-native and invasive plant species are invading our native habitat and open spaces. They aggressively compete with our native plants for resources and spreads rapidly once established. Monitoring, management, and removal of these plant species is an important aspect of...

Date:
Tue, 12/02/2025
Time:
8:30 am - 11:30 am
Where:
Fremont Canyon Nature Preserve
Difficulty Rating:
3
Distance:
0 miles
Minimum Age:
18
Registration:
Registration Opens on 11/17/2025 at 8:00am

Come out and enjoy the evening with us on the Orchard Hills loop trail. This trail meanders around an avocado orchard on the edge of the open space preserve and provides fantastic ridge-top views of Irvine and the Pacific coastline. The...

Date:
Tue, 12/02/2025
Time:
4:00 pm - 6:00 pm
Where:
Orchard Hills
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Registration:
Registration Opens on 11/17/2025 at 8:00am

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, 12/02/2025
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 11/17/2025 at 8:00am

Wednesday, December 3, 2025

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, 12/03/2025
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 11/18/2025 at 8:00am

Thursday, December 4, 2025

This week in OC Parks’ Irvine Ranch Open Space, we’ll hike in Baker Canyon. This scenic hike includes steep climbs and descents on both single and double-track trails with about 1100 feet of accumulated climbing. We will enjoy sweeping views...

Date:
Thu, 12/04/2025
Time:
7:30 am - 10:30 am
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
4
Distance:
7 miles
Minimum Age:
16
Registration:
Registration Opens on 11/19/2025 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:
Thu, 12/04/2025
Time:
8:30 am - 10:30 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Registration:
Registration Opens on 11/19/2025 at 8:00am

Please be aware this is a Fitness Hike and not for beginners; the pace is approximately a 19-minute mile. Join Laguna Canyon Foundation Volunteers to raise your heart rate and your spirits on this strenuous, moderately paced, 6.6-mile hike over...

Date:
Thu, 12/04/2025
Time:
8:30 am - 11:00 am
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
4
Minimum Age:
16

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 Open Space Preserve, you may travel at various hiking speeds based on your comfort...

Date:
Thu, 12/04/2025
Time:
6:00 pm - 7:30 pm
Where:
Irvine Open Space Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
12
Registration:
Registration Opens on 11/19/2025 at 8:00am

Join us for an evening/night mountain bike ride through Limestone Canyon Nature Preserve and Red Rock Wilderness, part of OCParks’ Irvine Ranch Open Space. We will ride approximately 12 miles, with 1500′ of climbing along a variety singletrack trails and...

Date:
Thu, 12/04/2025
Time:
6:00 pm - 8:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
12 miles
Minimum Age:
16
Registration:
Registration Opens on 11/19/2025 at 8:00am

Experience the serenity of Bommer Canyon Preserve under a full moon during this moderate-paced hike in the Irvine Open Space Preserve. We’ll experience mature coastal sage scrub and fantastic sunset views overlooking the city of Irvine and the hillsides to...

Date:
Thu, 12/04/2025
Time:
7:30 pm - 10:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Registration:
Registration Opens on 11/19/2025 at 8:00am