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 30 Events

Monday, October 7, 2024

Monday Morning Super Trek: Bommer Canyon and Crystal Cove

Hiking & Fitness
Monday Morning Super Trek: Bommer Canyon and Crystal Cove

Come start your week with us on our Super Treks in the Irvine Open Space Preserve. Join us as we explore Bommer Canyon and Crystal Cove State Park. After hiking up to Bommer Ridge, we drop down and loop through Crystal Cove State Park. Along the way, we will be rewarded with views of the ocean and spectacular canyons. There will be several steep ascents and descents.
Participants must be able to hike 11 miles with an elevation gain of 1800 feet at an average moving rate of 3 miles per hour. All participants must carry their own water! Please come prepared with a pack, plenty of water, snacks, sturdy closed-toe hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail. Under-prepared participants may be denied access to the event.

Monday Morning Super Trek: Bommer Canyon and Crystal Cove
Date:
Mon, 10/07/2024
Time:
7:30 am - 12:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
4
Distance:
11 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Friday, October 11, 2024

Bommer Canyon Exploration Day

Special Events
Bommer Canyon Exploration Day

Enjoy self-guided access in the southern portion of Irvine’s Open Space Preserve. The entire southern Open Space Preserve trail network will be open for self-guided hiking and biking from 8 am to 1 pm. This includes the single tracks in Shady Canyon and Bommer Canyon that are reserved for guided activities only. Registration is required for this event. The Bommer Canyon Cattle Camp will be available for parking, but please take note that your vehicle must be removed from the Cattle Camp area by 1 pm.

Bommer Canyon Exploration Day
Date:
Fri, 10/11/2024
Time:
8:00 am - 1:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
Variable
Distance:
Variable
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
80 of 100
More Information  

Thursday, October 17, 2024

Thursday Morning Trek: Bommer Canyon

Hiking & Fitness
Thursday Morning Trek: Bommer Canyon

This week in the Irvine Open Space Preserve, we’ll be in Bommer Canyon, once part of the historic Irvine cattle ranch where corrals and ranch equipment still stand. The hike is a seven-mile loop with some climbing but rewards you with fantastic views overlooking the ocean and many Irvine locales. Please bring water, a trail snack, sunscreen, a hat, and any other necessary equipment to keep you safe on the trail. Get your boots out and register to hike the loop through the Laguna Coast Wilderness and back to Cattle Camp.

Thursday Morning Trek: Bommer Canyon
Date:
Thu, 10/17/2024
Time:
7:30 am - 11:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
4
Distance:
7 miles
Minimum Age:
16
Spaces Left:
13 of 20
More Information  

Bommer Canyon Preserve Full Moon Hike

Hiking & Fitness
Bommer Canyon Preserve Full Moon Hike

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 the north. This hike is just over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.

Bommer Canyon Preserve Full Moon Hike
Date:
Thu, 10/17/2024
Time:
7:00 pm - 9:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Spaces Left:
7 of 20
More Information  

Saturday, October 19, 2024

Wilderness Access Day: Bommer Canyon

Special Events
Wilderness Access Day: Bommer Canyon

Enjoy self-guided access in the southern portion of Irvine’s Open Space Preserve. The entire southern Open Space Preserve trail network will be open for self-guided hiking and biking from 8 am to 2 pm. This includes the single-tracks in Shady Canyon and Bommer Canyon that are reserved for guided activities only. Registration is not required for this event, though it is shown on the website. If you need driving directions, please use the online registration to receive a map and instructions for getting to Bommer. The Bommer Canyon Cattle Camp will be available for parking, but please take note that your vehicle must be removed from the Cattle Camp area by 2 pm.

Wilderness Access Day: Bommer Canyon
Date:
Sat, 10/19/2024
Time:
8:00 am - 2:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
Variable
Distance:
Variable
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
183 of 200
More Information  

Sunday, October 20, 2024

Bommer Canyon East Fork and Ridge Route Loop Hike

Hiking & Fitness
Bommer Canyon East Fork and Ridge Route Loop Hike

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 over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.

Bommer Canyon East Fork and Ridge Route Loop Hike
Date:
Sun, 10/20/2024
Time:
7:30 am - 10:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Spaces Left:
20 of 20
More Information  

Tuesday, October 29, 2024

Bommer Canyon to Butterfly Valley Hike

Hiking & Fitness
Bommer Canyon to Butterfly Valley Hike

Join us as we explore the Irvine Open Space Preserve on this hike through Bommer and Shady Canyons. We’ll begin at the Cattle Camp, where ranch equipment of old still stands. After a steep ascent on the East Fork trail, we’ll make our way across part of Serrano Ridge and descend into Shady Canyon to the Butterfly Valley trail. Here, you’ll experience some of the most mature Coastal Sage Scrub in all of Orange County. After a short stop we’ll return the same way or loop around Fox Run Trail. Total round trip distance is 9 miles with an elevation gain of 1500 feet at an average moving rate of 2.5 miles per hour. All participants must carry their own water! Please come prepared with a pack, plenty of water, snacks, sturdy closed-toe hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail. Under-prepared participants may be denied access to the event!

Bommer Canyon to Butterfly Valley Hike
Date:
Tue, 10/29/2024
Time:
7:30 am - 12:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
4
Distance:
9 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 10/14/2024
More Information  

Thursday, October 31, 2024

Halloween Morning Fitness Hike with Yoga at Bommer Cattle Camp

Hiking & Fitness
Halloween Morning Fitness Hike with Yoga at Bommer Cattle Camp

Treat yourself to a five-mile moderate fitness hike (averaging about 3 mph) with rolling hills before experiencing yoga the Cattle Camp. This historic old west setting connects us with the history of The Irvine Ranch and the barn’s outdoor stage is perfect for yoga. The hike is highlighted with beautiful views of the canyon and the yoga is suitable for those with little or no experience, focused on hips, legs and core. Our focus on breath calms the nervous system and has a positive effect on mental, emotional and physical health. If you have never been to the Cattle Camp before you will be surprised how connected you feel to the cowboys that worked on this land. Please bring water, a yoga mat plus a large beach towel and wear shoes appropriate for hiking.

Halloween Morning Fitness Hike with Yoga at Bommer Cattle Camp
Date:
Thu, 10/31/2024
Time:
8:00 am - 11:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
5 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 10/16/2024
More Information  

Butterfly Series: Monarch Butterfly Stewardship in Bommer Canyon

Stewardship
Butterfly Series: Monarch Butterfly Stewardship in Bommer Canyon

Please join IRC staff water milkweed and nectar plants for the Monarch butterfly in Bommer Canyon. With your help we will create islands of Milkweed and nectar plants that will help support the seasonal migration of Monach butterflies. We may be using shovels and small handheld tools. No experience necessary.

Butterfly Series: Monarch Butterfly Stewardship in Bommer Canyon
Date:
Thu, 10/31/2024
Time:
9:00 am - 11:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
2
Distance:
0.5 miles
Minimum Age:
15
Spaces Left:
Registration for this event opens at 8:00am on 10/16/2024
More Information  

Sunday, November 3, 2024

Bommer Canyon East Fork and Ridge Route Loop Hike

Hiking & Fitness
Bommer Canyon East Fork and Ridge Route Loop Hike

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 over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.

Bommer Canyon East Fork and Ridge Route Loop Hike
Date:
Sun, 11/03/2024
Time:
7:30 am - 10:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 10/19/2024
More Information  

Friday, November 8, 2024

Bommer Canyon East Fork and Ridge Route Loop Hike

Hiking & Fitness
Bommer Canyon East Fork and Ridge Route Loop Hike

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 over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition and should be able to hike steep hills.

Bommer Canyon East Fork and Ridge Route Loop Hike
Date:
Fri, 11/08/2024
Time:
4:00 pm - 6:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 10/24/2024
More Information  

Sunday, November 10, 2024

Advanced Distance Hike: Bommer Canyon

Hiking & Fitness
Advanced Distance Hike: Bommer Canyon

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 14 miles and is designed for advanced hikers. Participants must be physically fit and have distance hiking experience. Singletrack trails, steep climbs and descents are numerous on this route, with over 2,400 feet of accumulated climbing elevation. Most months, the route stays in the Irvine Open Space Preserve for its entirety, but will occasionally feature hiking to the sea and back: beginning in Bommer, the hike will head into Crystal Cove State Park, then pass through Laguna Coast Wilderness Park before returning to the Irvine preserve.

Advanced Distance Hike: Bommer Canyon
Date:
Sun, 11/10/2024
Time:
6:30 am - 12:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
5
Distance:
14 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 10/26/2024
More Information  

Friday, November 15, 2024

Better Birding Basics: Birds of Bommer Canyon

Interpretive
Better Birding Basics: Birds of Bommer Canyon

The easy walking trail passes through a sycamore grove and along riparian, coastal sage scrub, and grassland habitats that attract birds such as hawks, owls, kites, woodpeckers, quail, meadowlarks and many others. Join a group of bird lovers as we look for some of our favorite birds in these habitats. Please wear sturdy shoes suitable for hiking, along with sun protection such as a hat and sunscreen. Bring your binoculars or borrow ours.

Better Birding Basics: Birds of Bommer Canyon
Date:
Fri, 11/15/2024
Time:
8:00 am - 11:30 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
2
Distance:
2 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 10/31/2024
More Information  

Bommer Canyon Preserve Full Moon Hike

Hiking & Fitness
Bommer Canyon Preserve Full Moon Hike

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 the north. This hike is just over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.

Bommer Canyon Preserve Full Moon Hike
Date:
Fri, 11/15/2024
Time:
6:00 pm - 8:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 10/31/2024
More Information  

Saturday, November 16, 2024

Wilderness Access Day: Bommer Canyon

Special Events
Wilderness Access Day: Bommer Canyon

Enjoy self-guided access in the southern portion of Irvine’s Open Space Preserve. The entire southern Open Space Preserve trail network will be open for self-guided hiking and biking from 8 am to 2 pm. This includes the single-tracks in Shady Canyon and Bommer Canyon that are reserved for guided activities only. Registration is not required for this event, though it is shown on the website. If you need driving directions, please use the online registration to receive a map and instructions for getting to Bommer. The Bommer Canyon Cattle Camp will be available for parking, but please take note that your vehicle must be removed from the Cattle Camp area by 2 pm.

Wilderness Access Day: Bommer Canyon
Date:
Sat, 11/16/2024
Time:
8:00 am - 2:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
Variable
Distance:
Variable
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
Registration for this event opens at 8:00am on 11/01/2024
More Information  

Sunday, November 17, 2024

Bommer Canyon East Fork and Ridge Route Loop Hike

Hiking & Fitness
Bommer Canyon East Fork and Ridge Route Loop Hike

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 over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.

Bommer Canyon East Fork and Ridge Route Loop Hike
Date:
Sun, 11/17/2024
Time:
7:30 am - 10:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 11/02/2024
More Information  

Friday, November 22, 2024

Autumn Morning Fitness Hike with Yoga at Bommer Cattle Camp

Hiking & Fitness
Autumn Morning Fitness Hike with Yoga at Bommer Cattle Camp

Join us for a five-mile moderate fitness hike (averaging about 3 mph) with rolling hills before experiencing yoga the Cattle Camp. This historic old west setting connects us with the history of The Irvine Ranch and the barn’s outdoor stage is perfect for yoga. The hike is highlighted with beautiful views of the canyon and the yoga is suitable for those with little or no experience, focused on hips, legs and core. Our focus on breath calms the nervous system and has a positive effect on mental, emotional and physical health. If you have never been to the Cattle Camp before you will be surprised how connected you feel to the cowboys that worked on this land. Please bring water, a yoga mat plus a large beach towel and wear shoes appropriate for hiking.

Autumn Morning Fitness Hike with Yoga at Bommer Cattle Camp
Date:
Fri, 11/22/2024
Time:
8:00 am - 11:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
5 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 11/07/2024
More Information  

Saturday, November 23, 2024

Art on the Landmarks Bommer Canyon Preserve: Native Animals in the Wild

Interpretive
Art on the Landmarks Bommer Canyon Preserve: Native Animals in the Wild

Join us this Fall for a rare opportunity to draw or paint animals in the wild (they are mounted so it’s not too wild) in Irvine’s Open Space Preserve! If landscapes or relics of the past are more interesting to you, we will have those too. Be inspired by the scenic hills or the nature garden that has been staged with native animals along with interpretive signs that tell the story of the Irvine Ranch.

We are excited to have Jessica Beck (jessicadamsky.com), Saddleback College Art Teacher and Professional Artist, as our special guest for this event! Jessica will demonstrate how to sketch animals and help anyone who needs a little inspiration or instruction. If you prefer to just get started, you are welcome to take a walk around the garden or Cattle Camp to find your perfect setting. Please bring a portable chair, sketch pad, easel, paints, pens, pencils or pastels, and other art supplies as they are not included. Minimum age: 18.

Art on the Landmarks Bommer Canyon Preserve: Native Animals in the Wild
Date:
Sat, 11/23/2024
Time:
8:30 am - 12:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
1
Distance:
0.5 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 11/08/2024
More Information  

Tuesday, November 26, 2024

Bommer Canyon to Butterfly Valley Hike

Hiking & Fitness
Bommer Canyon to Butterfly Valley Hike

Join us as we explore the Irvine Open Space Preserve on this hike through Bommer and Shady Canyons. We’ll begin at the Cattle Camp, where ranch equipment of old still stands. After a steep ascent on the East Fork trail, we’ll make our way across part of Serrano Ridge and descend into Shady Canyon to the Butterfly Valley trail. Here, you’ll experience some of the most mature Coastal Sage Scrub in all of Orange County. After a short stop we’ll return the same way or loop around Fox Run Trail. Total round trip distance is 9 miles with an elevation gain of 1500 feet at an average moving rate of 2.5 miles per hour. All participants must carry their own water! Please come prepared with a pack, plenty of water, snacks, sturdy closed-toe hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail. Under-prepared participants may be denied access to the event!

Bommer Canyon to Butterfly Valley Hike
Date:
Tue, 11/26/2024
Time:
7:30 am - 12:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
4
Distance:
9 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 11/11/2024
More Information  

Sunday, December 1, 2024

Bommer Canyon East Fork and Ridge Route Loop Hike

Hiking & Fitness
Bommer Canyon East Fork and Ridge Route Loop Hike

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 over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.

Bommer Canyon East Fork and Ridge Route Loop Hike
Date:
Sun, 12/01/2024
Time:
7:30 am - 10:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 11/16/2024
More Information  
1 2