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.
| 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.
Click here to learn more about IRC-Certified Volunteers. • Click here to learn more about the Difficulty Ratings.
Sunday, December 15, 2019
Distance Hike: Bommer to the Sea
Join us for a challenging and beautiful hiking adventure to the sea and back. 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 approximately 2400 feet of accumulated climbing […]
- Date:
- Sun, 12/15/2019
- Time:
- 7:15 AM - 1:15 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 5
- Distance:
- 14 miles
- Minimum Age:
- 18
- Spaces Left:
- Full
Saturday, December 21, 2019
Wilderness Access Day: Bommer Canyon
Special Note: Cattle Camp is currently under renovation and space for parking in the corral is reduced. Carpooling is highly recommended and appreciated during this time. 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 […]
- Date:
- Sat, 12/21/2019
- Time:
- 8:00 AM - 2:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- Variable
- Distance:
- Variable
- Minimum Age:
- n/a
- Family Friendly:
- Yes
- Spaces Left:
- 14 of 200
Sunday, January 5, 2020
Distance Hike: Bommer to the Sea
Join us for a challenging and beautiful hiking adventure to the sea and back. 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 approximately 2400 feet of accumulated climbing […]
- Date:
- Sun, 01/05/2020
- Time:
- 7:15 AM - 1:15 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 5
- Distance:
- 14 miles
- Minimum Age:
- 18
- Spaces Left:
- 9 of 15
Wednesday, January 8, 2020
Youth Action Team Stewardship at Bommer Canyon
The Youth Action Team, an after school community-service based program throughout the City of Irvine regularly volunteers their time to steward the Irvine Ranch Natural Landmarks. This week, middle school students will spend their morning helping to enhance Bommer Canyon! Stewardship activities can include planting native species to enhance the habitat, planting cactus to close social trails, […]
- Date:
- Wed, 01/08/2020
- Time:
- 3:30 PM - 4:45 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 2
- Minimum Age:
- 13
Thursday, January 9, 2020
Twilight Yoga Hike in Bommer Canyon
Enjoy a short hike and a gentle yoga practice in nature. A short but steep climb at a medium fast pace takes us to a 360-degree view of OC where we indulge in an evening yoga flow under a setting sun. A short hike under a darkening sky takes us back. Bring water, a yoga […]
- Date:
- Thu, 01/09/2020
- Time:
- 2:00 PM - 5:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Distance:
- 3 miles
- Minimum Age:
- 16
- Spaces Left:
- 12 of 15
Friday, January 10, 2020
Full Moon Hike: Bommer Canyon
If you’ve ever wondered what happens in the open space when the sun goes down, then sign up for the popular full moon hike. Experience the serenity of a moonlit night in Bommer Canyon. This hike is just over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The […]
- Date:
- Fri, 01/10/2020
- Time:
- 4:30 PM - 7:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Distance:
- 3 miles
- Minimum Age:
- 8
- Spaces Left:
- 9 of 25
Tuesday, January 14, 2020
Bommer Canyon Habitat Restoration
Come get your hands dirty and learn about the restoration process. Please join IRC staff and volunteers in helping restore degraded habitat to pristine habitat in Bommer Canyon, once home to a working cattle ranch. Habitat restoration is important for returning native wildlife and plant species to an area as well as improving ecosystem processes. […]
- Date:
- Tue, 01/14/2020
- Time:
- 9:00 AM - 12:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Distance:
- 2 miles
- Minimum Age:
- 18
- Spaces Left:
- 3 of 3
Wednesday, January 15, 2020
Mid Week Hike: Bommer Canyon
Recharge your batteries with a refreshing mid-week hike through Bommer Canyon. This area was historically a center for cattle operations that occurred in the San Joaquin Hills up until the late 1990s, and is now part of the Open Space Preserve. This hike involves multiple steep climbs and descents across a variety of trail types, […]
- Date:
- Wed, 01/15/2020
- Time:
- 8:00 AM - 1:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 4
- Distance:
- 12 miles
- Minimum Age:
- 18
- Spaces Left:
- 19 of 20
Saturday, January 18, 2020
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 […]
- Date:
- Sat, 01/18/2020
- Time:
- 8:00 AM - 2:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- Variable
- Distance:
- Variable
- Minimum Age:
- 12
- Family Friendly:
- Yes
- Spaces Left:
- Full
Monday, January 20, 2020
Nurture the Bommer Canyon Nature Garden
Help us nurture the native garden in Cattle Camp. Your support is essential to keeping the garden looking healthy, by planting native shrubs to enhance the garden and restore native habitat. If you love gardening, this is an excellent way to give back. This garden features native plants that call our community home and it […]
- Date:
- Mon, 01/20/2020
- Time:
- 9:45 AM - 12:15 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Minimum Age:
- 18
- Spaces Left:
- Full
Monday, February 3, 2020
Nurture the Bommer Canyon Nature Garden
Help us nurture the native garden in Cattle Camp. Your support is essential to keeping the garden looking healthy, by planting native shrubs to enhance the garden and restore native habitat. If you love gardening, this is an excellent way to give back. This garden features native plants that call our community home and it […]
- Date:
- Mon, 02/03/2020
- Time:
- 9:30 AM - 12:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Minimum Age:
- 18
- Spaces Left:
- Full
Thursday, February 6, 2020
Thursday Morning Trek: Bommer Canyon
This week in the Irvine Open Space, 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, […]
- Date:
- Thu, 02/06/2020
- Time:
- 8:00 AM - 11:30 AM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Distance:
- 7 miles
- Minimum Age:
- 16
- Spaces Left:
- Full
Twilight Yoga Hike in Bommer Canyon
Enjoy a short hike and a gentle yoga practice in nature. A short but steep climb at a medium fast pace takes us to a 360-degree view of OC where we indulge in an evening yoga flow under a setting sun. A short hike under a darkening sky takes us back. Bring water, a yoga […]
- Date:
- Thu, 02/06/2020
- Time:
- 2:30 PM - 5:30 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Distance:
- 3 miles
- Minimum Age:
- 16
- Spaces Left:
- Full
Saturday, February 8, 2020
Distance Hike: Bommer Canyon
The title says it all. This is your chance to venture deep in the Irvine backcountry. 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 […]
- Date:
- Sat, 02/08/2020
- Time:
- 7:00 AM - 1:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 5
- Distance:
- 14 miles
- Minimum Age:
- 18
- Spaces Left:
- Full
Sunday, February 9, 2020
Full Moon Hike: Bommer Canyon
If you’ve ever wondered what happens in the open space when the sun goes down, then sign up for the popular full moon hike. Experience the serenity of a moonlit night in Bommer Canyon. This hike is just over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The […]
- Date:
- Sun, 02/09/2020
- Time:
- 5:30 PM - 8:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Distance:
- 3 miles
- Minimum Age:
- 8
- Spaces Left:
- Full
Tuesday, February 11, 2020
Bommer Canyon Habitat Restoration
Come get your hands dirty and learn about the restoration process. Please join IRC staff and volunteers in helping restore degraded habitat to pristine habitat in Bommer Canyon, once home to a working cattle ranch. Habitat restoration is important for returning native wildlife and plant species to an area as well as improving ecosystem processes. […]
- Date:
- Tue, 02/11/2020
- Time:
- 9:00 AM - 12:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Distance:
- 2 miles
- Minimum Age:
- 18
- Spaces Left:
- Full
Wednesday, February 12, 2020
Mid Week Hike: Bommer Canyon
Recharge your batteries with a refreshing mid-week hike through Bommer Canyon. This area was historically a center for cattle operations that occurred in the San Joaquin Hills up until the late 1990s, and is now part of the Open Space Preserve. This hike involves multiple steep climbs and descents across a variety of trail types, […]
- Date:
- Wed, 02/12/2020
- Time:
- 8:00 AM - 1:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 4
- Distance:
- 12 miles
- Minimum Age:
- 18
- Spaces Left:
- Full
Saturday, February 15, 2020
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 […]
- Date:
- Sat, 02/15/2020
- Time:
- 8:00 AM - 2:00 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- Variable
- Distance:
- Variable
- Minimum Age:
- 12
- Family Friendly:
- Yes
- Spaces Left:
- Full
Sunday, February 16, 2020
Distance Hike: Bommer to the Sea
Join us for a challenging and beautiful hiking adventure to the sea and back. 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 approximately 2400 feet of accumulated climbing […]
- Date:
- Sun, 02/16/2020
- Time:
- 7:15 AM - 1:15 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 5
- Distance:
- 14 miles
- Minimum Age:
- 18
- Spaces Left:
- Full
Monday, March 2, 2020
Nurture the Bommer Canyon Nature Garden
Help us nurture the native garden in Cattle Camp. Your support is essential to keeping the garden looking healthy, by planting native shrubs to enhance the garden and restore native habitat. If you love gardening, this is an excellent way to give back. This garden features native plants that call our community home and it […]
- Date:
- Mon, 03/02/2020
- Time:
- 10:00 AM - 12:30 PM
- Where:
- Bommer Canyon
- Difficulty Rating:
- 3
- Minimum Age:
- 18
- Spaces Left:
- Full
