Join us in OC Parks’ Irvine Ranch Open Space for a challenging docent-led mountain bike ride for very experienced off-road riders in excellent cardio shape through Fremont and Weir Canyons to Sierra…

IRC Volunteers are needed to support IRC managed Exploration Day, a special event that provides the public with a rare opportunity to explore designated wilderness areas through a self-guided…

Join us for a slow-paced hike through Limestone Canyon Nature Preserve. Slowing our pace will encourage us to experience the land with all of our senses. If you enjoy recording your sightings of…

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…

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…

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…

Santa Ana, Calif. (April 16, 2026) – On April 14, 2026, the Orange County Board of Supervisors approved nine state budget funding priorities that support safety net programs, reduce…

WHATCrews will use large equipment to remove accumulated excess sand from the Talbert Channel outlet in Huntington Beach, as allowedthrough a regulatory permit. This emergency activity is needed…

Access is first come, first served until parking capacity is reached. No registration required.Explore 6 miles of trails at Gypsum Canyon Wilderness through this self-guided opportunity.Located…

Advance registration is required for this program.Located within OC Parks’ Irvine Ranch Open Space, Red Rock Wilderness features more than 8 miles of trails for hiking, mountain biking and horseback…