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 47 Events

Saturday, December 21, 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, 12/21/2024
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 has closed.
More Information  

Sunday, December 22, 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, 12/22/2024
Time:
6:30 am - 12:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
5
Distance:
14 miles
Minimum Age:
18
Spaces Left:
11 of 20
More Information  

Friday, January 3, 2025

Winter Morning Fitness Hike with Yoga at Bommer Cattle Camp

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

Start the new year off right on 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.

Winter Morning Fitness Hike with Yoga at Bommer Cattle Camp
Date:
Fri, 01/03/2025
Time:
8:00 am - 11:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
5 miles
Minimum Age:
18
Spaces Left:
Full
More Information  

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, 01/03/2025
Time:
4:30 pm - 6:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Distance:
3 miles
Minimum Age:
18
Spaces Left:
23 of 25
More Information  

Sunday, January 5, 2025

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, 01/05/2025
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 12/21/2024
More Information  

Sunday, January 12, 2025

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, 01/12/2025
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 12/28/2024
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:
Sun, 01/12/2025
Time:
5:00 pm - 7:30 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 12/28/2024
More Information  

Monday, January 13, 2025

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, 01/13/2025
Time:
7:30 am - 12:00 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
4
Distance:
11 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 12/29/2024
More Information  

Friday, January 17, 2025

Winter Morning Fitness Hike with Yoga at Bommer Cattle Camp

Hiking & Fitness
Winter 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.

Winter Morning Fitness Hike with Yoga at Bommer Cattle Camp
Date:
Fri, 01/17/2025
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 01/02/2025
More Information  

Saturday, January 18, 2025

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, 01/18/2025
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 01/03/2025
More Information  

Sunday, January 19, 2025

Ultra Distance Hike: Bommer Canyon

Hiking & Fitness
Ultra 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 17 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 2,800 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.

Ultra Distance Hike: Bommer Canyon
Date:
Sun, 01/19/2025
Time:
6:30 am - 12:30 pm
Where:
Bommer Canyon Preserve
Difficulty Rating:
5
Distance:
17 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 01/04/2025
More Information  

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, 01/19/2025
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 01/04/2025
More Information  

Sunday, January 26, 2025

Trail Running at Bommer Canyon

Hiking & Fitness
Trail Running at Bommer Canyon

Join us for an energizing trail run at Bommer Canyon, a scenic open space in Irvine known for its rolling hills, rugged paths, and breathtaking views of Southern California’s coastal landscape. This 6-mile route, featuring elevation changes totaling 2,500 feet, offers a diverse mix of rocky trails, gentle slopes, and challenging inclines, making it an excellent choice for intermediate and experienced trail runners. We’ll aim for a moderate pace of around 10-12 minutes per mile, adjusting for terrain and taking advantage of flatter sections to push the pace a bit. With a blend of uphill challenges and smooth, runnable stretches, this run will be both a great fitness boost and a beautiful outdoor adventure. Remember to bring water, a hat, sturdy trail running shoes, and some snacks. Participants should be physically fit and have prior experience with trail running or fast-paced distance hiking.

Trail Running at Bommer Canyon
Date:
Sun, 01/26/2025
Time:
7:00 am - 9:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
5
Distance:
6 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 01/11/2025
More Information  

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, 01/26/2025
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 01/11/2025
More Information  

Thursday, January 30, 2025

Butterfly Series: Monarch Butterfly Stewardship in Bommer Canyon

Stewardship
Butterfly Series: Monarch Butterfly Stewardship in Bommer Canyon

Please join IRC staff plant 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, 01/30/2025
Time:
9:00 am - 11:30 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 01/15/2025
More Information  

Friday, January 31, 2025

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, 01/31/2025
Time:
4:30 pm - 6:30 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 01/16/2025
More Information  

Sunday, February 2, 2025

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, 02/02/2025
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 01/18/2025
More Information  

Friday, February 7, 2025

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, 02/07/2025
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:
Registration for this event opens at 8:00am on 01/23/2025
More Information  

Sunday, February 9, 2025

Trail Running at Bommer Canyon

Hiking & Fitness
Trail Running at Bommer Canyon

Join us for an energizing trail run at Bommer Canyon, a scenic open space in Irvine known for its rolling hills, rugged paths, and breathtaking views of Southern California’s coastal landscape. This 6-mile route, featuring elevation changes totaling 2,500 feet, offers a diverse mix of rocky trails, gentle slopes, and challenging inclines, making it an excellent choice for intermediate and experienced trail runners. We’ll aim for a moderate pace of around 10-12 minutes per mile, adjusting for terrain and taking advantage of flatter sections to push the pace a bit. With a blend of uphill challenges and smooth, runnable stretches, this run will be both a great fitness boost and a beautiful outdoor adventure. Remember to bring water, a hat, sturdy trail running shoes, and some snacks. Participants should be physically fit and have prior experience with trail running or fast-paced distance hiking.

Trail Running at Bommer Canyon
Date:
Sun, 02/09/2025
Time:
7:00 am - 9:00 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
5
Distance:
6 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 01/25/2025
More Information  

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, 02/09/2025
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 01/25/2025
More Information  
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