The Irvine Ranch Open Space Long Distance series is designed for experienced hikers who thrive on long days, big climbs, and the satisfaction of pushing physical and mental limits. This hike covers approximately 18.5 miles with 3,000 feet of elevation gain, traversing some of the most rugged and remote sections of the Irvine Ranch Open Space. This route combines steep ascents, rolling ridgelines, and exposed terrain with panoramic views that make every step worth the effort. This is not a casual stroll — it’s a test of endurance, pacing, and preparation.

Participants should have prior experience with strenuous, half-day or full-day hikes and be comfortable navigating challenging terrain in varying conditions.

Self-Sufficiency is Required

There are no water sources, food stations, or supply drops along this route. Every participant is responsible for carrying all the gear, water, and nutrition they will need for the day.

We strongly recommend:

Water: Minimum 70 oz per person (more in hot weather)

Food/Snacks: High-calorie, easily portable items to sustain 7 hours of hiking (energy bars, trail mix, sandwiches, electrolyte chews)

Gear: Closed-toe hiking shoes or boots, sun protection (hat, sunglasses, sunscreen), extra layers, basic first-aid kit, trekking poles (optional but recommended)

Under-prepared participants may be denied access to the hike.

Pace & Timing Expect to be on the trail for 7 hours, with extended climbs and limited shade. A steady, sustainable pace is critical. We will take short breaks as needed, but hikers should be able to maintain consistent forward progress throughout the day.

Important Notes This hike is physically demanding and not suitable for beginners. There will be no early exit points — once you commit, you must be prepared to complete the route.

Learn more and register here.

Join us Sunday morning in OC Parks’ Irvine Ranch Open Space for a fitness-focused hike on the Hicks Haul Road, West Loma and Shoestring trails in Limestone Canyon. Hikers will enjoy wonderful views and a panoramic overview of Orange County. The hike starts at Hicks Haul Road staging area and will cover a distance of 8.25 miles, about 5 miles of the hike is on paved surface and rest on trails. Participants are expected to hike close to 3.5 miles per hour and come prepared with closed toe hiking boots or shoes, water, trail snacks, sunscreen, hat, day pack or fanny pack, and any other necessary equipment or supplies you might need to keep you safe on this hike.

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

Learn more and register here.

Join us in beautiful Weir Canyon for this moderate paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands where deer and bobcats are frequently observed. Multiple steep climbs and descents, and sweeping views, are included throughout this 6-mile hike. Please make sure you are in excellent physical condition! Even though this is a slower cardio hike, it is faster than a walk. You must be able to hike 3+ miles per hour the entire time without stopping.
 

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.  If you’re unable to participate, please cancel your registration promptly so others may register.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land. Please review our Trail Tips and FAQ pages to ensure you arrive prepared for this hike.

Learn more and register here.

Join us for a fitness-focused hike on the paved Hicks Haul Road in the Irvine Open Space Preserve. 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 about 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 and 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.

Join OC Parks for a fun morning of fishing at Mile Square Regional Park!

This clinic is designed to teach families how to fish responsibly with a chance to catch a few fish. Please meet at the south lake near the park ranger station and Euclid Street entrance. Whether this is your first time fishing or you’re a seasoned angler, this fun and hands-on educational program will have instructors available to demonstrate, assist and answer any questions. No experience is necessary!  

All needed equipment and bait will be provided but participants are welcome to bring their own. Participants 16 and older planning to fish must have a California state fishing license. Fishing licenses can be purchased online here. All California Department of Fish and Wildlife rules and regulations apply.  

Participants will learn how to catch and release fish, but you may bring your own cooler to take your catches home. Please note there is a limit of five fish for trout.

Advance registration is required. Learn more and register here.

This program is free and parking is $5 per vehicle.

For questions call (657) 805-7365 or email Phoebe.Lett@ocparks.com.

*This program begins at Laguna Canyon Foundation Headquarters, 10 Phillips St., Laguna Beach, CA 92651*

If you use the wilderness parks for hiking, biking, photography or just relaxing, trail work might be for you! Join us as we work together to protect the fragile habitat and increase the sustainability of trails at Laguna Coast Wilderness Park. 

No experience is necessary and gloves and tools will be provided. Please wear long pants, closed-toe shoes and sun protection and bring water. Expect to hike up to 4 miles while carrying tools. 

Advance registration is required. Learn more and register here.

Participants must be 16 or older. Anyone under 18 must be accompanied by a guardian.

The program and parking are free for volunteers. 

Adverse weather, including wet or muddy trail conditions, may cancel the program. 

Join Laguna Canyon Foundation naturalists to spot local native and seasonal resident birds on this easy 2-mile hike through a landscaped suburban parkland setting at Mason Regional Park. No experience necessary! 

This program is designed for ages 12 and older. Participants under 18 must be accompanied by a parent or guardian. 

Wear hiking or walking shoes and bring binoculars. The program will meet in parking lot A. 

Advance registration required. Learn more and register here.

The program is free and parking is $5 per vehicle. 

Adverse weather, including wet or muddy trail conditions, may cancel the program.

*This program takes place at Mason Regional Park, 18712 University Dr., Irvine, CA 92612.

The OC Parks Jr. Ranger Program encourages park guests to explore the outdoor world within OC Parks by developing a sense of belonging, becoming a part of nature and feeling empowered to be stewards of Orange County’s natural and cultural resources. 

Participants will explore Mason Regional Park, complete activities and take the OC Parks Jr. Ranger Oath to earn a unique Jr. Ranger badge. Participants are encouraged to park in lot C and the program will begin near the restrooms by the lake.

This program is designed for ages 7 to 12, but all are welcome. 

Minors must be accompanied by a parent or guardian during the program. Sunscreen, sturdy footwear and water are recommended.

The program is free and parking is $3 per vehicle. Inclement weather may cancel the program. 

Advance registration required. Learn more and register here.

For questions, please email Resource Specialist Shelbi Richardson at shelbi.richardson@ocparks.com.

Click here to learn more about the OC Parks Jr. Ranger Program.

Please be aware this is a fitness hike and not for beginners; the pace is approximately a 19-minute mile. 

Raise your heart rate and your spirits on this difficult, strenuous and fast-paced, 7.2-mile hike over steep and uneven terrain with 1,050 feet of elevation gain. Please wear closed-toe shoes, sun protection and bring water.

The program will begin at the Nix Nature Center parking lot. 

Participants must be 16 or older. Anyone under 18 must be accompanied by a guardian.

Advance registration required. Learn more and register here.

The program is free and parking is $3 per vehicle. 

Adverse weather may cancel this program.  

​​​​​​*This program begins at the James Dilley Preserve, 350 Artisan Dr., Laguna Beach, CA 92651*

Enjoy an easy 2.5-mile hike with your family at Laguna Coast Wilderness Park! Starting at the James Dilley Preserve, we will hike one of the most diverse areas of the park to Barbara’s Lake and back. The hike is moderate but includes uneven terrain and approximately 45 feet of elevation gain. Please wear closed-toe shoes, sun protection and bring water.

Participants 18 and younger must be accompanied by a guardian. 

Advance registration required. Learn more and register here.

The program is free and parking is $3 per vehicle.

Adverse weather, including wet or muddy trail conditions, may cancel the program.