Limestone Canyon is a treasure waiting to be discovered. Join us for a moderately-paced, 10-mile cardio hike. The hike may include a few short rest stops along the way and will be a great…

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…

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…

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…

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…