Please join us at the Native Plant Nursery located at the Augustine Staging Area. Depending on the needs of the nursery, we will be collecting acorns, potting, watering, or planting the oaks. All…

Escape into the stunning landscapes of the Irvine Ranch Natural Landmarks with a one of kind family hiking experience. Our docent-led family walk features tales of the land and miniature donkeys that…

Join us for an extremely challenging and strenuous hiking adventure in the scenic Fremont Canyon Wilderness Area. This 16-mile loop hike is for experienced, physically fit distance hikers. The hike…

Come out and enjoy this family-fun activity on the Mesa. We will start with an activity to make your own fossil, then we will take a 2–3-mile hike looking for fossils deposited here in Orange County…

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@…

Join us for a docent-led evening/night mountain bike ride through the seldom-visited Baker Canyon in OC Parks’ Black Star Canyon Wilderness Park! Enjoy empty wilderness trails and sweeping views of…

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…

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.  View evidence of…

Do you want to explore the Sinks, a geological rock formation that has got its reputation as “Orange County’s miniature Grand Canyon”? Come out and join us on a hike from the Portola staging area to…

Join us on this moderate-paced hike over the ridge and the through beautiful Limestone Canyon Nature Preserve, part of OC Parks’ Irvine Ranch Open Space. We will enjoy short breaks at the East and…