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 105 Events

Tuesday, September 9, 2025

Evening Hike on Hicks Haul Road

Hiking & Fitness
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. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level.  This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.

Evening Hike on Hicks Haul Road
Date:
Tue, 09/09/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 08/25/2025
More Information  

Wednesday, September 10, 2025

After Work Fitness Hike on Paved Hicks Haul Road

Hiking & Fitness
After Work Fitness Hike on Paved Hicks Haul Road

Join us every Wednesday night in OC Parks’ 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.

After Work Fitness Hike on Paved Hicks Haul Road
Date:
Wed, 09/10/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 12:00am on 08/25/2025
More Information  

Thursday, September 11, 2025

The Lure and Lull of Limestone Canyon Sand Trap Trail and Dripping Springs

Equestrian
The Lure and Lull of Limestone Canyon Sand Trap Trail and Dripping Springs

Take a leisurely equestrian ride through beautiful Limestone Canyon, part of OC Parks’ Irvine Ranch Open Space, and home of oak woodlands, grasslands, and coastal sage scrub. On a clear day this ride has amazing views of Orange County and Catalina Island. This ride includes an approximate 900 foot climb in elevation. This ride is not an easy one. Horses and rider must be in fit condition.

Equestrians must have their own horse, trail riding experience, and the ability to transport their horse to the staging area. Horses must be fit, able to comfortably ride the distance as described, and be well-behaved in a group. This walking equestrian ride travels on single-track and wide fire roads. It may include a moderate, steady climb. Owners of unshod horses, please note that the footing may include areas of gravel and pavement.

The Lure and Lull of Limestone Canyon Sand Trap Trail and Dripping Springs
Date:
Thu, 09/11/2025
Time:
9:30 am - 1:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
8 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 08/27/2025
More Information  

Saturday, September 13, 2025

Animal Signs and Tracks in Agua Chinon

Interpretive
Animal Signs and Tracks in Agua Chinon

Come search for evidence that animals leave behind in OC Parks’ Irvine Ranch Open Space. Mule deer, bobcats, coyotes and even mountain lions call this hidden canyon home. Gain the basic tracking techniques as we search for evidence such as tracks, fur, bones, homes, and even scat. You never know what you may find! Please wear comfortable clothes and shoes that you do not mind getting a little dusty. This program is focused on older children and adults.

Animal Signs and Tracks in Agua Chinon
Date:
Sat, 09/13/2025
Time:
8:00 am - 11:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
3 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 08/29/2025
More Information  

Explore Limestone Canyon Hike to Dripping Springs

Hiking & Fitness
Explore Limestone Canyon Hike to Dripping Springs

Explore beautiful Limestone Canyon, part of OCParks’ Irvine Ranch Open Space, on this serene morning hike to Dripping Springs. Limestone Canyon Nature Preserve is one of the most pristine wilderness areas in the county. Dripping Springs is an extremely sensitive area and an essential watering hole for wildlife. We’ll hike through coastal sage scrub, grasslands, and oak woodlands as we take in this iconic destination. This 7-mile hike moves between 2.5 and 3 mph with a total elevation gain of 1300 feet. This is not a fast cardio paced hike! Please come prepared with a sturdy day pack, water, snacks, closed-toe hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail.

Explore Limestone Canyon Hike to Dripping Springs
Date:
Sat, 09/13/2025
Time:
8:30 am - 11:45 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
7 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 08/29/2025
More Information  

Sunset Fitness Hike on Paved Hicks Haul Road: Both Sides of Loma Ridge

Hiking & Fitness
Sunset Fitness Hike on Paved Hicks Haul Road: Both Sides of Loma Ridge

You will enjoy a gorgeous sunset with panoramic views of Orange County while hiking in OC Parks’ Irvine Ranch Open Space on the paved Hicks Haul Road. This hike travels 6 miles, out and back crossing over Loma Ridge. This is the perfect activity for you to get your work-out in and view the sunset. The hike is conducted at an average pace of 3 miles per hour, but you may travel a bit faster or slower, at a walk, run, or jog depending on your comfort level. 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.

Sunset Fitness Hike on Paved Hicks Haul Road: Both Sides of Loma Ridge
Date:
Sat, 09/13/2025
Time:
6:00 pm - 8:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
6 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 08/29/2025
More Information  

Sunday, September 14, 2025

Hoofprints and Horizons: a Gentle Family Hike with a Horse

Interpretive
Hoofprints and Horizons: a Gentle Family Hike with a Horse

Escape into the stunning landscapes of the Irvine Ranch Natural Landmarks with a one of kind family hiking experience. Our guided walk features a friendly horse, offering a special opportunity to interact with these magnificent animals while exploring the natural beauty of Southern California. This walk is perfect for all ages and abilities. It’s a chance to create long-lasting memories and foster a love for both horses and nature.

Please note: This hiking activity is for educational purposes. Participants should not bring their own horses as this is not an equestrian ride.

Hoofprints and Horizons: a Gentle Family Hike with a Horse
Date:
Sun, 09/14/2025
Time:
9:00 am - 12:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
3 miles
Minimum Age:
5
Spaces Left:
Registration for this event opens at 8:00am on 08/30/2025
More Information  

Tuesday, September 16, 2025

Tuesday Morning Fitness Hike on Paved Hicks Haul Road

Hiking & Fitness
Tuesday Morning Fitness Hike on Paved Hicks Haul Road

Ready for a workout? Forget the gym for the day and head outside! Join us for an exhilarating morning fitness hike on the paved Hicks Haul Road in OC Parks’ Irvine Ranch Open Space. This hike allows you to choose between a 3, 6, or 8 mile route, all of which are conducted at the speed of about 3.0 to 3.5 miles per hour. The footing on the asphalt paved road is smoother than dirt roads and single track trails normally found in Limestone Canyon Nature Preserve, but is beginning to show its age with cracks, crevices and an occasional dip. Otherwise, the terrain is smooth, so this is a great walk for anyone who wants a “wilderness experience” without getting dirty! The 6 and 8 mile routes experience two fairly steep ascents and descents. The 3 mile route takes you to the top of Loma Ridge and back down. Along the way, you will have sweeping views of much of Orange County and the Santa Ana Mountains. Various animals, like hawks, deer, and lizards are also frequently seen in this area.

Tuesday Morning Fitness Hike on Paved Hicks Haul Road
Date:
Tue, 09/16/2025
Time:
7:30 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
8 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 09/01/2025
More Information  

Evening Hike on Hicks Haul Road

Hiking & Fitness
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. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level.  This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.

Evening Hike on Hicks Haul Road
Date:
Tue, 09/16/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 09/01/2025
More Information  

Wednesday, September 17, 2025

After Work Fitness Hike on Paved Hicks Haul Road

Hiking & Fitness
After Work Fitness Hike on Paved Hicks Haul Road

Join us every Wednesday night in OC Parks’ 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.

After Work Fitness Hike on Paved Hicks Haul Road
Date:
Wed, 09/17/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 09/02/2025
More Information  

Thursday, September 18, 2025

Butterfly Series: Limestone Canyon Butterfly Habitat Islands

Stewardship
Butterfly Series: Limestone Canyon Butterfly Habitat Islands

Spend your morning helping to remove weeds and rebuild berms within the butterfly habitat islands in Limestone. With your help we will be able to maintain “islands” of host and nectar plants for butterflies in decline in Limestone Canyon. You will be transported from via a safari style truck from butterfly island to butterfly island through a beautiful oak woodland.

Butterfly Series: Limestone Canyon Butterfly Habitat Islands
Date:
Thu, 09/18/2025
Time:
8:30 am - 11:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
2 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 09/03/2025
More Information  

Saturday, September 20, 2025

Bats: Heroes of the Night

Interpretive
Bats: Heroes of the Night

As the day starts to settle into the night in OCParks’ Irvine Ranch Open Space, bats awaken, stir and streak into the evening sky. Come hear fascinating tales of our flying mammals. We will head out towards a popular roosting location as we watch our nighttime heroes begin their nightly adventures. This program is ideal to visually observe the bats in flight, though bat detectors are available to listen for their high-frequency calls. Be prepared to walk about 1/2 a mile. Dress warmly as it may be a chilly evening. A camping chair is welcome as we will enjoy an extended period of time listening for bats that fly about in the night.

Bats: Heroes of the Night
Date:
Sat, 09/20/2025
Time:
6:00 pm - 8:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
1
Distance:
2 miles
Minimum Age:
5
Spaces Left:
Registration for this event opens at 8:00am on 09/05/2025
More Information  

Sunday, September 21, 2025

Evening Family Beginner Mountain Bike Ride: Limestone Canyon to The Sinks

Mountain Biking
Evening Family Beginner Mountain Bike Ride: Limestone Canyon to The Sinks

For families and children ages 12 and up who would like to join IRC-certified volunteers in OC Parks’ Irvine Ranch Open Space on a longer, slow-paced, family-oriented ride through sycamores, oaks, and habitat native to California. The route takes us to The Sinks, Orange County’s own “Grand Canyon.” Along the way, we will stop and talk about the local habitat, and hope to see some of our local native animals and raptors. The ride is an 8-9 miles with 400-800 feet of elevation gain that may require hike-a‐bike for some riders. Motorized recreation vehicles of any class or type are not permitted for recreational use.

Evening Family Beginner Mountain Bike Ride: Limestone Canyon to The Sinks
Date:
Sun, 09/21/2025
Time:
4:00 pm - 6:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
Variable
Distance:
8 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 09/06/2025
More Information  

Tuesday, September 23, 2025

Tuesday Morning Fitness Hike on Paved Hicks Haul Road

Hiking & Fitness
Tuesday Morning Fitness Hike on Paved Hicks Haul Road

Ready for a workout? Forget the gym for the day and head outside! Join us for an exhilarating morning fitness hike on the paved Hicks Haul Road in OC Parks’ Irvine Ranch Open Space. This hike allows you to choose between a 3, 6, or 8 mile route, all of which are conducted at the speed of about 3.0 to 3.5 miles per hour. The footing on the asphalt paved road is smoother than dirt roads and single track trails normally found in Limestone Canyon Nature Preserve, but is beginning to show its age with cracks, crevices and an occasional dip. Otherwise, the terrain is smooth, so this is a great walk for anyone who wants a “wilderness experience” without getting dirty! The 6 and 8 mile routes experience two fairly steep ascents and descents. The 3 mile route takes you to the top of Loma Ridge and back down. Along the way, you will have sweeping views of much of Orange County and the Santa Ana Mountains. Various animals, like hawks, deer, and lizards are also frequently seen in this area.

Tuesday Morning Fitness Hike on Paved Hicks Haul Road
Date:
Tue, 09/23/2025
Time:
7:30 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
8 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 09/08/2025
More Information  

Evening Hike on Hicks Haul Road

Hiking & Fitness
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. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level.  This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.

Evening Hike on Hicks Haul Road
Date:
Tue, 09/23/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
12
Spaces Left:
Registration for this event opens at 8:00am on 09/08/2025
More Information  

Wednesday, September 24, 2025

Early Morning Hike to The Sinks: Limestone Canyon

Hiking & Fitness
Early Morning Hike to The Sinks: Limestone Canyon

Come along with us on this morning hike through beautiful Limestone Canyon Nature Preserve, part of OC Parks’ Irvine Ranch Open Space. You’ll be rewarded with a spectacular view of The Sinks as well as sweeping views of Orange County and the Santa Ana Mountains. This hike involves steep climbs and descents on both double and single-track trails.

Please note that the route for this hike may be shortened or altered due to trail conditions or adverse weather.

Early Morning Hike to The Sinks: Limestone Canyon
Date:
Wed, 09/24/2025
Time:
7:00 am - 11:00 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 09/09/2025
More Information  

After Work Fitness Hike on Paved Hicks Haul Road

Hiking & Fitness
After Work Fitness Hike on Paved Hicks Haul Road

Join us every Wednesday night in OC Parks’ 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.

After Work Fitness Hike on Paved Hicks Haul Road
Date:
Wed, 09/24/2025
Time:
6:00 pm - 7:30 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
3.5 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 09/09/2025
More Information  

Thursday, September 25, 2025

Butterfly Series: Limestone Canyon Butterfly Habitat Islands

Stewardship
Butterfly Series: Limestone Canyon Butterfly Habitat Islands

Spend your morning helping to remove weeds and rebuild berms within the butterfly habitat islands in Limestone. With your help we will be able to maintain “islands” of host and nectar plants for butterflies in decline in Limestone Canyon. You will be transported from via a safari style truck from butterfly island to butterfly island through a beautiful oak woodland.

Butterfly Series: Limestone Canyon Butterfly Habitat Islands
Date:
Thu, 09/25/2025
Time:
8:30 am - 11:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
2 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 09/10/2025
More Information  

Saturday, September 27, 2025

Single Tracks of Limestone and Red Rock Wilderness

Mountain Biking
Single Tracks of Limestone and Red Rock Wilderness

If you enjoy riding in the wilderness on empty trails then join us on this mountain bike through Limestone Canyon and the Red Rock Wilderness Parks. This ride is for experienced off-road riders, in excellent cardio shape and that are comfortable with moderate climbs and single track trails.

Single Tracks of Limestone and Red Rock Wilderness
Date:
Sat, 09/27/2025
Time:
8:00 am - 12:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
19 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 09/12/2025
More Information  

Sunset Fitness Hike on Paved Hicks Haul Road: Both Sides of Loma Ridge

Hiking & Fitness
Sunset Fitness Hike on Paved Hicks Haul Road: Both Sides of Loma Ridge

You will enjoy a gorgeous sunset with panoramic views of Orange County while hiking in OC Parks’ Irvine Ranch Open Space on the paved Hicks Haul Road. This hike travels 6 miles, out and back crossing over Loma Ridge. This is the perfect activity for you to get your work-out in and view the sunset. The hike is conducted at an average pace of 3 miles per hour, but you may travel a bit faster or slower, at a walk, run, or jog depending on your comfort level. 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.

Sunset Fitness Hike on Paved Hicks Haul Road: Both Sides of Loma Ridge
Date:
Sat, 09/27/2025
Time:
6:00 pm - 8:00 pm
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
6 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 09/12/2025
More Information  
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