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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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557 Events Found

Thursday, October 9, 2025

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:
Thu, 10/09/2025
Time:
8:00 am - 11:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
0 miles
Minimum Age:
18
Registration:
Registration Opens on 09/24/2025 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, fast paced 6-mile hike over...

Date:
Thu, 10/09/2025
Time:
8:30 am - 11:00 am
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
4
Minimum Age:
16

Join OC Park naturalists for story time and short hike with your little ones (ages 3-6) as we learn about spiders!   Age: 3-6 year-olds. Participants under 18 must be accompanied by a parent or guardian.    Location: Nix Nature Center, Laguna Coast Wilderness Park...

Date:
Thu, 10/09/2025
Time:
9:30 am - 10:30 am
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
1
Minimum Age:
3
Family Friendly:
Yes

Come explore Baker Canyon in OCParks’ Irvine Ranch Open Space. This scenic equestrian ride involves steep climbs and descents on both double and singletrack trails and around 1000’ of accumulated elevation. We will travel through multiple landscapes of coastal sage...

Date:
Thu, 10/09/2025
Time:
10:00 am - 2:00 pm
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
4
Distance:
6 miles
Minimum Age:
18
Registration:
Registration Opens on 09/24/2025 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, 10/09/2025
Time:
4:00 pm - 8:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
12 miles
Minimum Age:
16
Registration:
Registration Opens on 09/24/2025 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 Open Space Preserve, you may travel at various hiking speeds based on your comfort...

Date:
Thu, 10/09/2025
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 09/24/2025 at 8:00am

Friday, October 10, 2025

Join us on this beautiful early morning hike passing through Irvine and Santiago Oaks Regional Parks and then crossing into Weir Canyon Nature Preserve, part of Irvine Ranch Open Space. Leaving Santiago Oaks, we drop into lower Weir Canyon, winding...

Date:
Fri, 10/10/2025
Time:
7:00 am - 10:00 am
Where:
Weir Canyon Nature Preserve
Difficulty Rating:
4
Distance:
7 miles
Minimum Age:
18
Registration:
Registration Opens on 09/25/2025 at 8:00am

After a brief walk from the Community Center, enjoy a 4-mile fitness hike on the Buck Gully Trail to warm up your legs before relaxing into yoga. The yoga is suitable for those with little or no experience and features...

Date:
Fri, 10/10/2025
Time:
8:00 am - 11:00 am
Where:
Buck Gully Reserve
Difficulty Rating:
3
Distance:
5 miles
Minimum Age:
18
Registration:
Registration Opens on 09/24/2025 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 Irvine! Every day at the farm is different; depending on the needs of...

Date:
Fri, 10/10/2025
Time:
8:00 am - 11:00 am
Where:
Native Seed Farm OCP
Difficulty Rating:
2
Minimum Age:
8
Registration:
Registration Opens on 09/26/2025 at 8:00am

Join us for a rewarding day of trail work on the Cactus Hill Trail at beautiful Whiting Ranch Wilderness Park! We’ll be tackling brush clearing, filling/leveling eroded areas, and clearing drains to help maintain one of the park’s most popular...

Date:
Fri, 10/10/2025
Time:
8:00 am - 12:00 pm
Where:
Whiting Ranch Wilderness Park
Difficulty Rating:
3
Minimum Age:
16
Registration:
6 of 7 Spaces Left

Take a leisurely ride on beautiful Hall Canyon and Helo trail in the Black Star Wilderness Area, home of oak woodlands, grasslands, and coastal sage scrub. View evidence of the old ranch days when cattle once roamed the area and...

Date:
Fri, 10/10/2025
Time:
10:00 am - 1:00 pm
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
10
Registration:
Registration Opens on 09/24/2025 at 8:00am

Spending time outside is one of the best ways to nurture curiosity and instill a love of the natural world. Bring your young ones and join OC Parks staff to learn all about the Newport Back Bay. Our Wild Tales...

Date:
Fri, 10/10/2025
Time:
10:00 am - 11:00 am
Where:
Upper Newport Bay
Difficulty Rating:
1
Minimum Age:
All Ages
Family Friendly:
Yes
Registration:
Registration Opens on 09/26/2025 at 6:00am

The OC Parks Jr. Ranger Program encourages park guests to explore the outdoor world within OC Parks by developing a sense of belonging, becoming a part of nature and feeling empowered to be stewards of Orange County’s natural and cultural...

Date:
Fri, 10/10/2025
Time:
3:00 pm - 4:30 pm
Where:
Laguna Coast Wilderness Park
Difficulty Rating:
2
Minimum Age:
7

Dive into nature at the Native Seed Farm on this outdoor Art on the Landmarks program. This session will be fall-themed focused, offering you an opportunity to explore your artistry in the late afternoon/ evening light. Join us for an...

Date:
Fri, 10/10/2025
Time:
3:30 pm - 7:00 pm
Where:
Native Seed Farm COI
Difficulty Rating:
1
Distance:
1 miles
Minimum Age:
12
Registration:
Registration Opens on 09/27/2025 at 8:00am

Saturday, October 11, 2025

Join us in OC Parks’ Irvine Ranch Open Space for a challenging docent-led mountain bike ride for very experienced off-road riders in excellent cardio shape. Climb challenging State Spur to Cathedral Rock, and then descend into Fremont Canyon while passing...

Date:
Sat, 10/11/2025
Time:
7:00 am - 12:00 pm
Where:
Fremont Canyon Nature Preserve
Difficulty Rating:
5
Distance:
25 miles
Minimum Age:
18
Registration:
Registration Opens on 09/26/2025 at 8:00am

Join us on this moderate-paced hike over the ridge and the through beautiful Limestone Canyon Nature Preserve, part of OC Parks’ Irvine Ranch Open Space. We will enjoy short breaks at the East and West Sinks viewing platforms before hiking...

Date:
Sat, 10/11/2025
Time:
7:00 am - 11:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
9.5 miles
Minimum Age:
18
Registration:
Registration Opens on 09/26/2025 at 8:00am

Do you want to explore the Sinks, a geological rock formation that has got its reputation as “Orange County’s miniature Grand Canyon”? Come out and join us on a hike from the Portola staging area to the West Sinks in...

Date:
Sat, 10/11/2025
Time:
7:00 am - 9:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
6 miles
Minimum Age:
18
Registration:
Registration Opens on 09/25/2025 at 8:00am

If you are a beginner rider and perhaps have just completed one of the IRC mountain biking clinics or just want an enjoyable and relaxed ride in the Orange County wilderness, then join us on this docent led, group mountain...

Date:
Sat, 10/11/2025
Time:
8:00 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Minimum Age:
12
Registration:
Registration Opens on 09/26/2025 at 8:00am

Enjoy the relaxation of riding in the wilderness on empty trails. Join us on this docent-led mountain bike ride through Limestone Canyon, part of OCParks’ Irvine Ranch Open Space. We will visit the East Viewing Platform for a panoramic view...

Date:
Sat, 10/11/2025
Time:
8:00 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
11 miles
Minimum Age:
14
Registration:
Registration Opens on 09/25/2026 at 8:00am

Access is first come, first served until parking capacity is reached. No registration required. Equestrians, while space is not guaranteed we encourage you to please email info@irconservancy.org to coordinate parking. Come explore 6 miles of new trails at Gypsum Canyon...

Date:
Sat, 10/11/2025
Time:
8:00 am - 2:00 pm
Where:
Gypsum Canyon Wilderness
Difficulty Rating:
Variable
Minimum Age:
All Ages
Family Friendly:
Yes
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