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.

Click here to learn more about IRC-Certified Volunteers.    •   Click here to learn more about the Difficulty Ratings.

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Found 11 Events

Wednesday, March 6, 2024

CANCELLED due to Trail Conditions: Limestone Canyon Distance Hike: Panoramic Sinks View from the Water Tank

Hiking & Fitness
CANCELLED due to Trail Conditions: Limestone Canyon Distance Hike: Panoramic Sinks View from the Water Tank

Explore beautiful Limestone Canyon on this challenging distance hike to the “water tank” beyond the East Sinks viewing area. This distance hike rewards hikers with panoramic unobstructed views of The Sinks, an ancient and dramatic formation of exposed sandstone cliffs. Limestone Canyon is one of the most pristine wilderness areas in the county. In addition to providing sweeping views, the trail passes through coastal sage scrub, grasslands, and oak woodlands. This hike moves between 3 and 3.5 mph with multiple sustained climbs.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

CANCELLED due to Trail Conditions: Limestone Canyon Distance Hike: Panoramic Sinks View from the Water Tank
Date:
Wed, 03/06/2024
Time:
7:30 AM - 12:00 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
12.5 miles
Minimum Age:
18
Spaces Left:
10 of 20
More Information  

Saturday, March 9, 2024

Agua Chinon and the Sinks Exploration

Special Events
Agua Chinon and the Sinks Exploration

Please note: Preregistration is required due to limited parking capacity.

Start your weekend off by exploring the Agua Chinon wash and the Sinks through this self-guided opportunity. Designated trails will be open for self-guided trail use in OC Parks’ Irvine Ranch Open Space. Trail routes vary in distance and level of difficulty with choices ranging from easy one-hour walks to a strenuous 9.5-mile trek. Whether traveling by feet or on two wheels, this exploration day is a treasure waiting to be discovered by hikers and mountain bikers alike. Visitors to the Open Space during this activity are able to hike or bike to the West and East Sinks viewing areas.

Please review our Trail Tips page and FAQ page to prepare for this challenging hiking and biking opportunity.

Agua Chinon and the Sinks Exploration
Date:
Sat, 03/09/2024
Time:
8:00 AM - 1:00 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
Variable
Distance:
Variable
Minimum Age:
All Ages
Family Friendly:
Yes
Spaces Left:
Full
More Information  

Sunday, March 10, 2024

Experience the Wild Side of Agua Chinon

Stewardship
Experience the Wild Side of Agua Chinon

Enjoy an adventurous morning cross country hiking through coastal sage scrub and help to protect the newly restored habitat that is immediately below in the stream bed. We will be locating and removing invasive Saharan Mustard. The work site is on the south ridge and hillsides above the restoration area. Saharan Mustard was found on this ridge 6 years ago and while largely contained, it is vital to continue the work that has been done.

The ridge provides impressive “aerial” views from 500 feet above Agua Chinon and The Sinks can be seen in the distance. These views come after navigating a few small challenges which include the (on trail) half-mile hike to the ridge line, a small scramble over a boundary fence and off trail hike through some occasionally dense coastal sage scrub.

This stewardship will require some bending and kneeling. Some optional work may involve crossing and the sitting on relatively steep slopes. The total distance of the hike for this program is approximately 2 miles, but much of the terrain is difficult and good balance and fitness is needed.  All training and tools will be provided, although bringing a pair of personal gloves is recommended. We hope you can join us and continue the work to restore the habitat at this site.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land.

Experience the Wild Side of Agua Chinon
Date:
Sun, 03/10/2024
Time:
8:00 AM - 12:00 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
2 miles
Minimum Age:
18
More Information  

Friday, March 15, 2024

Limestone Canyon Distance Hike

Hiking & Fitness
Limestone Canyon Distance Hike

Join us for a scenic, fast-paced, challenging, distance hike in the beautiful Limestone Canyon Nature Preserve, part of OCParks’ Irvine Ranch Open Space. This hike is for physically fit hikers who enjoy the challenge of multiple steep climbs and descents. This 10–13 mile hike offers sweeping views of Orange County and the Santa Ana Mountains as well as possible wildlife sightings. This hike may include a visit to The Sinks and/or Dripping Springs.

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.

Limestone Canyon Distance Hike
Date:
Fri, 03/15/2024
Time:
7:00 AM - 12:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
13 miles
Minimum Age:
18
Spaces Left:
13 of 15
More Information  

Sunday, March 17, 2024

Slow-paced Mountain Bike Ride – Limestone Canyon/East Sinks

Mountain Biking
Slow-paced Mountain Bike Ride - Limestone Canyon/East Sinks

Enjoy the relaxation of riding in the wilderness on empty trails. Join us on this docent-led mountain bike ride through Limestone Canyon, part of OCParks’ Irvine Ranch Open Space. We will visit the East Viewing Platform for a panoramic view of the geological feature call The Sinks. The route to The Sinks will include a fun downhill ride on the Dripping Springs single track. The return route will take us on the Limestone Ridge single track with views of Limestone Canyon, Santiago Canyon and the Santa Ana Mountains.

This is a slow-paced ride designed for the beginner that has experience riding fire roads such as Limestone Canyon or Telegraph Canyon but wants to develop their climbing and riding abilities. The ride can also be enjoyed by more advanced riders looking for a relaxed ride in a beautiful setting.

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. Motorized recreation vehicles of any class or type are not permitted for use in the Nature Preserve.

Slow-paced Mountain Bike Ride - Limestone Canyon/East Sinks
Date:
Sun, 03/17/2024
Time:
9:00 AM - 11:30 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
11 miles
Minimum Age:
14
Spaces Left:
9 of 15
More Information  

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 OCParks’ 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. Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level 2-3 activity on the land.  Please visit our FAQ page for answers to activity specific questions you may have prior to registering.

Evening Family Beginner Mountain Bike Ride: Limestone Canyon to The Sinks
Date:
Sun, 03/17/2024
Time:
4:00 PM - 6:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
8 miles
Minimum Age:
12
Spaces Left:
13 of 15
More Information  

Thursday, March 21, 2024

Thursday Morning Trek: Agua Chinon and The Sinks

Hiking & Fitness
Thursday Morning Trek: Agua Chinon and The Sinks

Come out and join us on a breathtaking hike from the Irvine Open Space Preserve into OC Parks’ Limestone Canyon Nature Preserve. This week’s docent-led hike begins in the Agua Chinon wash, continues to The Sinks, and may include a side trip to Box Springs, a natural year-round source of fresh water.

Maximum distance is just short of 8 miles, with some sustained climbing in one section. Participants must wear sturdy, closed-toe hiking shoes. Remember to pack plenty of water, sunscreen, a hat, and all other necessary equipment to keep you safe on the trail. This activity originates in the City of Irvine and travels into OC Parks’ Irvine Ranch Open Space.

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: Agua Chinon and The Sinks
Date:
Thu, 03/21/2024
Time:
7:30 AM - 11:00 AM
Where:
Irvine Open Space Preserve
Difficulty Rating:
4
Distance:
8 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 03/07/2024
More Information  

Saturday, March 23, 2024

Limestone Canyon – Weekend Hike to both Sinks

Hiking & Fitness
Limestone Canyon - Weekend Hike to both Sinks

Join us on this fast-paced hike over the ridge and the through beautiful Limestone Canyon Nature Preserve, part of OCParks’ Irvine Ranch Open Space. While this will not be a cardio hike, it will be a steady pace of 3 mph with short breaks at the East and West Sinks viewing platforms. We will enjoy a view of wonderful vista’s in addition to spectacular view of The Sinks. This hike involves hiking on both double and single-track trails with an elevation gain of 1000.

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 on this half-day hike in the wilderness area.
Under-prepared hikers may be denied access to the event. Please come prepared.

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.

Limestone Canyon - Weekend Hike to both Sinks
Date:
Sat, 03/23/2024
Time:
7:00 AM - 11:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
10 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 03/09/2024
More Information  

Tuesday, March 26, 2024

Hike to The Sinks: Limestone Canyon

Hiking & Fitness
Hike to The Sinks: Limestone Canyon

Come along with us on this fast-paced morning hike through beautiful Limestone Canyon Nature Preserve, part of OCParks’ 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.

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.

Hike to The Sinks: Limestone Canyon
Date:
Tue, 03/26/2024
Time:
7:00 AM - 11:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
4
Distance:
10 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 03/12/2024
More Information  

Saturday, March 30, 2024

Photo Journey Limestone Canyon: The Sinks, Loma Ridge Backcountry and Sunset

Interpretive
Photo Journey Limestone Canyon: The Sinks, Loma Ridge Backcountry and Sunset

Join us in the back-country wilderness for a journey filled with beautiful sights that are photographic and artistic sketching opportunities. Our journey begins in the afternoon. We will be deep in a secluded canyon, where time is measured in centuries, even millennia, in the sandstone cliffs of this ancient place called Limestone Canyon.
You will board a 4-wheel drive vehicle for a 13-mile tour of the canyon and hills surrounding it. We will stop frequently for 15-30 minutes to admire the views, take photos, sketch landscapes, and answer questions. Stops will include short walks with views of The Sinks, a trip up Cactus and Markel Spur, with optional, single track, one-mile hike into Box Springs or a 1.5 mile Markel Spur to East Sinks loop hike. Both the Box Springs and Markel Spur hikes provide the visitor a true back-country experience. An alternative, but similar, hiking trail may be used.

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.

Photo Journey Limestone Canyon: The Sinks, Loma Ridge Backcountry and Sunset
Date:
Sat, 03/30/2024
Time:
1:30 PM - 5:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
2
Distance:
16 miles
Minimum Age:
16
Spaces Left:
Registration for this event opens at 8:00am on 03/16/2024
More Information  

Sunday, March 31, 2024

Agua Chinon Equestrian Ride

Equestrian
Agua Chinon Equestrian Ride

Join us on an equestrian ride up Agua Chinon Canyon in OC Parks’ Irvine Ranch Open Space. We will make our way to see the wonders of the Sinks, Orange County’s mini Grand Canyon. Bring a lunch and we can relax while we take in the beauty around us at the Sinks Viewing Deck. Then we will finish our ride back to the staging area.

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.

Agua Chinon Equestrian Ride
Date:
Sun, 03/31/2024
Time:
10:00 AM - 12:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
6 miles
Minimum Age:
18
Spaces Left:
Registration for this event opens at 8:00am on 03/17/2024
More Information