Join us on this early morning hike enjoying beautiful Weir Canyon Nature Preserve, part of OC Parks’ Irvine Ranch Open Space.  Starting in Irvine Regional Park, we pass through Lower and Upper Weir Canyon to a scenic overlook. We then head down Upper Blind Canyon as we wind our way back to our starting point.  This hike is around 9.5 miles with one significant climb and descent.

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

Please come prepared with a daypack, around 70 oz. (2 quarts) of water, trail snacks, closed-toe hiking shoes, sunscreen, first aid, and any other supplies needed to keep you safe on the trail. Each participant must carry his or her own pack and water and be comfortable hiking at an average moving pace of 3 mph. Under-prepared participants may be denied access to this program.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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. To learn more about the staging areas and activity locations, please visit our Staging Areas Playlist page.

Learn more and register here.

Access is first come, first served until parking capacity is reached. No registration required.

Equestrians, while space is not guaranteed we encourage you to please email irvineranchopenspace@ocparks.com to coordinate parking.

Come explore 3.3-miles of new trails at Saddleback Wilderness, part of OC Parks’ Irvine Ranch Open Space, through this self-guided opportunity. Designated trails will be open for self-guided hiking, biking and equestrian use. There are multiple trail loop options which vary in distance and level of difficulty. Choices range from an easy 1-mile loop to multiple figure-8 configurations for those looking to maximize their mileage. Regardless of distance, nearly all options feature scenic views including a destination vista point offering 360-degree perspectives from the mountains to the sea.

Please review our Trail Tips page and FAQ page to prepare for your experience in the wilderness area.

Gates will open no earlier than 8 a.m.  Please do not block gate or park on Santiago Canyon Road.

Click here to learn more. 

Saddleback Wilderness is located at 3081 Santiago Canyon Road, Orange, CA, 92869. 

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.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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.

Learn more and register here.

Join us for a strenuous, extremely challenging, fast-paced cardio hike in Weir Canyon that leads us on a figure eight-shaped route. Along the way we’ll be rewarded with stunning panoramic views of Weir Canyon, Gypsum Canyon, Fremont Canyon, and Blind Canyon. On a clear day it is possible to see Catalina Island, Mount Baldy, and even Downtown LA. Wildlife sightings are possible, too.

This is an advanced 9.5 mile cardio hike, completed in less than 3 hours and includes 1600 ft of elevation gain. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents. There are no rest stops and the average 3.5 mile per hour fast-pace can be extremely difficult over steep terrain in the wilderness setting.

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

Please bring a minimum of 70 oz. water and trail snacks. Come prepared with a pack, sturdy closed-toe hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail for the extreme fast-paced hike in a wilderness area. Each participant must carry his or her own pack and water. Under-prepared participants may be denied access to this program.

Please note that you will be asked to adhere to the following measures during the activity in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

Learn more and register here.

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.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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. To learn more about the staging areas and activity locations, please visit our Staging Areas Playlist page.

Learn more and register here.

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.

Participants should be confident in their ability to hike 3, 6, or 8 miles at a steady pace. Please come prepared with proper hiking attire, ample water and adequate sun protection. Because of the paved surface, you may wear walking or running shoes instead of hiking boots. For the longer distances, at least 2 quarts of water (64 oz) is recommended. Ages 16 and up.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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.

Learn more and register here.

Join us for a slow-paced hike in Limestone Canyon. Our pace will be around 2.5 MPH for this 5.5-mile hike with an elevation gain of about 400 feet. Slowing our pace will encourage us to experience the land with all of our senses. We will be able to see, smell and hear the sounds of the Open Space! If you enjoy recording your sightings of wildflowers, please download the App called SEEK (INaturalist) prior to reaching the Augustine Staging area. We will use SEEK to identify native and non-native wildflowers. Our hike will take us along Limestone Canyon and then over to Dripping Springs. Dripping Springs is a year-round spring where we will encounter water that is expressed through the side of a vertical rock face. Due to shade and moisture, we will find that the plants in Dripping Springs are very different from the plants and flowers found in the meadow area of Limestone Canyon.

Participants should be prepared to hike on dirt trails and have previously hiked a similar distance. Please come prepared with a backpack and at least 1 liter of water, closed-toed hiking shoes or boots, snacks, sunscreen, hat and any other supplies to keep you safe and healthy on the trail. EACH hiker must carry their own water and supplies.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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.

Learn more and register here.

Come start your week with us on our Super Treks in the Landmarks. Join us as we explore Weir Canyon, part of OC Parks’ Irvine Ranch Open Space. 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. 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.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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.

Learn more and register here.

Limestone Canyon is a treasure waiting to be discovered. Join us for an afternoon, fast paced, 5.5-mile fitness hike with 750 ft of elevation. The hike will be a great introduction to fitness, cardio-style hikes as well as OC Parks’ magnificent Irvine Ranch Open Space.  Views of Limestone Canyon, and the surrounding wilderness, from Limestone Ridge will be the highlight of our tour.

Please bring a minimum of 48 oz. water. Come prepared with a pack, sturdy closed-toed hiking shoes or boots, sunscreen, first aid, and all other supplies to keep you safe and healthy on the trail for this hike in a wilderness area. Each participant must carry his or her own pack and water.  Under-prepared participants may be denied access to this program.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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.

Learn more and register here.

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.

From the Augustine Staging Area, we proceed up an old ranch road that was paved to provide access to Irvine Lake and the mines in Black Star Canyon. At the research center, we head off-road up a narrow, windy, and sometimes bumpy trail to Loma Ridge and beyond. Bring your camera equipment, sketchbook, or just enjoy the ride.

Please note that you will be asked to adhere to the following measures in order to participate:

• Be registered in advance, no walk-up registration is permitted.
• Arrive with all necessary equipment to keep you safe on the trail, including water, proper attire, and closed-toe footwear, first aid, health needs etc.
• Restrooms will be available, but facilities will not be sanitized for each individual.
• All participants are required to sign a liability waiver upon arrival at the staging area and before beginning the activity. The waiver can be previewed here: IRC Liability Waiver
• You may be prevented from participating if you do not adhere to the above protocols.

Additionally, in an effort to respect and protect all employees, volunteers, and participants, please do not sign up or attend if you are not feeling well, exhibiting any symptoms of illness or have been in recent contact with someone who was ill.

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. To learn more about the staging areas and activity locations, please visit our Staging Areas Playlist page.

Learn more and register here.