Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.  This is an 8 mile cardio hike, completed in 2.5+ hours, includes a 1000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

This hike is much faster than a regular walking hike. We average four (4) miles per hour fast-paced and is 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-5 activity on the land.

Experience the serenity of Bommer Canyon during this moderate-paced hike in the Irvine Open Space. We’ll experience mature coastal sage scrub and fantastic views overlooking the city of Irvine and the hillsides to the north. This hike is just over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.

Enjoy nature with friends and family in Round Canyon. We hike along a fairly flat trail as we watch for red-tailed hawks and mule deer. This activity originates in the City of Irvine and travels into OC Parks’ Limestone Canyon Nature Preserve. The hike averages 2-3 miles round trip at an easy pace with a medium level of interpretation. This program is for participants who would like a slower-paced and level hike.

Wear comfortable clothes and sturdy shoes, and bring water for the hike.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-2 activity on the land.

Join us for a 2.5 mile hike along the west shore of Irvine Lake where we’ll keep an eye out for wintering migratory birds and take in some of the views surrounding Orange County’s largest lake. A $5 parking fee is required upon entering Irvine Lake. Hikers are encouraged to bring their own binoculars.

Volutaria tubuliflora otherwise known as Egyptian Knapweed is a recently introduced invasive plant to our area and we need your help to get rid of it! It is not yet widespread, and we have a chance to prevent it from taking over at Upper Newport Bay.

During the growing season, we will meet once a month to survey for this nasty pest and remove everything we find. No experience needed!

Minors aged 16 and younger must have legal guardian present at all times.

Rain will cancel the event.

Walk-ins are welcome, but space is limited, so registration is suggested.

For more information email nathan.taxel@ocparks.com or call 949-923-2277

Community service hours are available for this event

If you are new to mountain biking and interested in getting started the right way, or if you just want to hone your existing skills developing terrain-influenced bike handling over several types of man-made features, this is the clinic for you!

The class begins with a brief overview of rider fundamentals starting with platform position and weight transfer then covering equipment basics & setup, braking, gearing and a brief bike maintenance Q&A session followed by a series of exercises demonstrating terrain-influenced bike handling over a variety of man-made features including log piles, rock step-ups, A-frames and many more. These riding techniques will be taught and practiced at the Mountain Bike Skills Development area.

Come join us for a fun themed craft project anytime between 10 a.m. and 2 p.m.!

Crafty Kids Sunday features FREE craft activities in the Muth Interpretive Center’s Discovery Classroom.

All ages are welcome, recommended for ages 2 to 10 years old. No registration is required. Children must be accompanied by an adult.

CDC guidelines to prevent the spread of COVID-19 will be observed.

The saying goes “April showers bring May flowers” but in our case it really should be “January showers lead to flowers in February, March and April.” Come explore the bluffs above Upper Newport Bay and learn about all the different wildflowers which grow there.

Rain will cancel the event.

Participants can expect to walk 2-3 miles over uneven terrain.

Minors aged 16 and younger must have legal guardian present at all times.

Walk-ins are welcome, but space is limited, so registration is suggested.

For more information email nathan.taxel@ocparks.com or call 949-923-2277

Experience the serenity of Bommer Canyon during this moderate-paced hike in the Irvine Open Space. We’ll experience mature coastal sage scrub and fantastic views overlooking the city of Irvine and the hillsides to the north. This hike is just over 3 miles and includes 700 feet of total climbing elevation with several very steep inclines. The steepest section ascends 300 feet in a quarter-mile. Participants must be in good physical condition.