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.
Wednesday, December 20, 2023
Plants Among Us: Learning About Plants at Saddleback Wilderness

Curious to learn about the plants among us, who’s sus and who’s not? Join us for a hike at Red Rocks, part of OC Parks’ Irvine Ranch Open Space, where we’ll look at local flora, talk about native and non-native species, and learn how different plants impact our ecosystems. Learning to identify plants, both native and non-native, is a great way to cultivate a relationship to our local wildlands.
This activity is geared towards participants who are curious about our local plants and ecosystem. Please bring water and all items needed to keep you safe during our walk. Hats and sunscreen are highly recommended as there is no shade along this route.
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level 3 activity on the land. Please visit our FAQ page for answers to activity specific questions you may have prior to registering.
Autumn Afternoon Yoga Hike at Orchard Hills

Join us for an Autumn afternoon event that includes a short two mile hike to warm up your legs before experiencing a gentle flow yoga practice in nature. The trail leads us along an avocado orchard on the edge of the open space preserve with beautiful views of Irvine. The yoga is suitable for those with little or no experience, slower in pace and gentle in practice. Our focus on breath calms the nervous system and has positive effects on mental, emotional and physical health. If you have never done a yoga hike before you will be surprised how connected you feel to nature. Please bring water, a yoga mat plus a large beach towel and wear shoes appropriate for hiking.
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level 2 activity on the land. Please visit our FAQ page for answers to activity specific questions you may have prior to registering.
After Work Fitness Hike on Paved Hicks Haul Road

Join us every Wednesday night in OCParks’ 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 County. This hike travels about 3.5 miles, up to the top of Loma Ridge and back down. The hike is conducted at an average of 3-3.5 miles per hour, but you may travel a bit faster or slower, at a walk, run, or jog depending on your comfort level. Most participants finish the route in about 1 hour. Because of the paved surface of the road, you may wear regular running or walking shoes. Trail shoes are fine, but not required. Please bring adequate water!
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-3 activity on the land. Please visit our FAQ page for answers to activity specific questions you may have prior to registering.
Thursday, December 21, 2023
Winter Solstice Hike to Mini Moab: Fremont Canyon

Join us on this epic hike to celebrate the Winter Solstice. We’ll hike from the bottom of Fremont Canyon to the bold, sandstone outcrops marking the ridgeline locally known as “Mini Moab.” This extremely challenging out-and-back hike is for experienced, physically fit distance hikers. We climb steeply along ranch roads past an abandoned coal mine, the Fremont Weather Station, remnants of a rare stand of Tecate cypress, and Lizard Rock. Less than a mile after entering the Coal Canyon Ecological Reserve, we reach our destination. The view from Mini Moab is nothing short of spectacular! After a break for snacks and to enjoy the view, we’ll retrace our steps back to the Fremont Staging Area.
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.
Weir Canyon Hike to the Overlook Trail

Join us as we explore Weir Canyon. We will hike up over Rifle Range and continue to the Overlook Trail where we will be rewarded with sweeping views of the Irvine Ranch Natural Landmarks and more distant views of the Palos Verdes Peninsula, Los Angeles Basin, and Cleveland National Forest. We will return through a beautiful oak woodland. Please wear hiking shoes/boots and bring water, a trail snack, sunscreen, hat, and any other necessary equipment to keep you safe on the trail. Each hiker must carry their own water and supplies. A red-tinted flashlight or headlamp is recommended. Participants must be able to hike 9+ miles with an accumulated elevation gain of 1800 feet at an average moving rate of 3 miles per hour.
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land.
Please visit our FAQ page for answers to activity specific questions you may have prior to registering.
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. 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!
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land. Please visit our FAQ page for answers to activity specific questions you may have prior to registering.
Thursday Morning Trek: Limestone Canyon and Dripping Springs

This week in OCParks’ Irvine Ranch Open Space, we’ll hike in Limestone Canyon to Dripping Springs. The hike is a 7-mile loop hike which includes some hills and descents. In addition to the springs, we will enjoy panoramic views of the wildlands from East Loma. Please bring water, a trail snack, sun screen, hat, and any other necessary equipment to keep you safe on the trail, and wear sturdy, closed-toe hiking boots. Participants must be able to hike 7 miles with an elevation gain of 1300 feet at an average moving rate of 3 miles per hour. Each hiker must carry his/her own water and supplies.
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land. Please visit our FAQ page for answers to activity specific questions you may have prior to registering.
Evening Hike on Hicks Haul Road

Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. This hike in the Irvine Open Space Preserve is done at an easy walking pace. This out-and-back program travels 3.5 miles round trip to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-2 activity on the land. Please visit our FAQ page for answers to activity specific questions you may have prior to registering.
Winter Solstice Stroll-CANCELLED

Welcome back the light in Santiago Oaks during our Winter Solstice Night Walk. Celebrate the shortest day of the year as we begin to the see the return of light at 7:27 p.m. on December 21. This night hike will overlap the start of winter but also the start of longer days. Plants and animals are still in full swing for winter, but they are slowly changing as the days become longer for the next spring season.
This hike is not recommended for very small children or strollers. No pets please. Children must be accompanied by a parent/guardian during the program. Dress in warm layers at the canyon is quite chilly at night.
For questions, please contact Resource Specialist, Kelley Brugmann at 714-973-6625 or Kelley.Brugmann@ocparks.com
Friday, December 22, 2023
Morning Hike at Gypsum Canyon Wilderness

Explore Gypsum Canyon Wilderness and hike OC Parks’ newest trails!
Learn about native plants and animals that can be found in the area and take in remarkable views of Gypsum Canyon. This moderate hike on unpaved dirt trails is approximately four miles round trip with 600 feet of elevation gain. We’ll cover many topics including birding, history, geology and native plants while taking breaks to enjoy the views.
Participants should come prepared with water, snacks, sun protection and sturdy walking shoes. Rain or adverse weather conditions will cancel the program. Minors must be accompanied by a parent or guardian at all times.
Advance registration required.
Sow and Grow Fridays

Join us Friday mornings in our native plant nursery for 3 hours of hands-on volunteer driven fun! Bring a friend and help us grow native plants for restoration projects around the Upper Newport Bay. Each week, you will have the opportunity to assist in seasonal activities like seed collection, sowing seed flats, transplanting seedlings, pruning, processing cuttings, composting, pot washing, weeding, and maintaining nursery space.
Minors must have a legal guardian present at all times.
This volunteer work will take place outdoors at the Back Bay Science Center. Although most of the work will be conducted under shade, volunteers should be prepared to stand and be exposed to changing weather for various lengths of time. Please bring sturdy closed-toe shoes, hiking or outdoor working attire, a reusable water bottle, sunscreen and a hat. Free parking and public restrooms are available on site. No experience necessary. Training and tools will be provided.
To register, go to: SowandGrowFridays.eventbrite.com
Wild Tales

Join OC Parks staff for Wild Tales, offered every Friday. Each session will include a kid friendly hike, story time and craft project.
Activities are designed for ages 2-4 but all are welcome.
All minors under 16 must be accompanied by a guardian at all times.
Being that our easy hikes are on dirt trails, wearing clothes and shoes fit for such trail conditions are recommended.
Rain or heat advisory will cancel the event.
Saturday, December 23, 2023
Wilderness Access Day: Gypsum Canyon Wilderness

Come explore OC Parks’ newest trails at Gypsum Canyon Wilderness through this self-guided opportunity.
Located within OC Parks’ Irvine Ranch Open Space, Gypsum Canyon Wilderness features six miles of new trails for hiking, mountain biking and horseback riding. Two lookout points offer sweeping views of the surrounding canyons and unique prehistoric rock formations, while seven new trails provide multiple loop options that vary in distance and range from easy to moderate in difficulty.
Gypsum Canyon Wilderness is comprised of protected and preserved native habitats that a variety of wildlife, including mule deer, red-tailed hawks, California gnatcatchers and bobcats, call home. Visitors will have the opportunity to provide voluntary feedback about Gypsum Canyon Wilderness through on-site participation surveys and offer naming suggestions for several unnamed trails.
Advance registration is required.