O'Neill Regional Park

Trail Closure

Vista Trail will be closed for maintenance and repair mid-October through mid-November. The starting date is tentatively scheduled for Oct. 24, determined by the contractor's schedule. Work is expected to take about 3 weeks, please use Coyote Canyon Trail as an alternate route during this time.

O'Neill Regional Park
30892 Trabuco Canyon Road
Trabuco Canyon, CA 92678
(949) 923-2260 or (949) 923-2256

Day Use: Open year round 7 a.m. to sunset.
Trails: Closed for three days following rain.
Camping: Year round, check-out at 12 p.m., check-in at 2 p.m., camping registration is from 7 a.m. to 8 p.m.

Parking fees (day use): $3 per vehicle entry Monday - Friday; $5 Saturday - Sunday; Higher for some holidays and events (Fee Information)

O'Neill Regional Park's 4,500 acres are situated in beautiful Trabuco and Live Oak Canyons. The park is heavily wooded with coast live oak and sycamore trees. The hillsides surrounding the park are filled with cactus, wild buckwheat, sagebrush and chaparral of scrub oak, buckthorn and mountain mahogany. Trabuco and Hickey Creeks also meander through the park, flowing in winter and early spring, dry in summer and fall.

If you would like to make a camping reservation, go to our online reservations system.


Child on a swing at the playgroundThe park serves both as an overnight camping and day use/picnic facility.

Picnic areas vary in size and are available on a first come, first served basis or by reservation. Barbeques and picnic tables are available throughout the park. Call the park for more information.

More than 23 miles of scenic trails can be explored by foot, bicycle or horseback. Other day use activities include horseshoe pits, two large community turf areas and a children’s playground.

The Arroyo campground offers 79 campsites varying in size to accommodate RVs or tent camping for up to eight people per site. Reservations for individual sites can be made online, by phone or in person. The park offers eight large group campsites for parties of 17 or more and five equestrian campsites, each equipped with horse corrals, barbeques and fire pits. Reservations for groups of 17 or more can be made by calling the park office at (949) 923-2260.


September 27, 2016 
Whiting Ranch Wilderness Park and O’Neill Regional Park Reopen Following Mountain Lion Investigation

Whiting Ranch Wilderness Park and closed areas of O’Neill Regional Park reopened Tuesday following closures Friday, Sept. 23 due to multiple mountain lion sightings in the area.

OC Parks rangers and game wardens from the California Department of Fish and Wildlife continued their investigations throughout the weekend and found no further evidence of mountain lion activity in either park. State wildlife officials recommended Tuesday that the parks resume regular operations at that time.

Both parks reopened, but visitors are advised to remain alert to potential hazards in these parks and whenever visiting wilderness areas.

April 19, 2016 
Ladera Ridge Habitat Protection

News ImageSignificant traffic on unauthorized trails has caused damage in the Ladera Ridge (Las Flores) area of the park. This area is closed, and in the interest of protecting the valuable natural resources found on both County and the Rancho Mission Viejo Reserve, measures will be taken to prevent further destruction.

February 9, 2015 
Invasive Pest Found in Orange County

Gold Spotted Oak Borer (GSOB), an invasive beetle that has killed thousands of oak trees in San Diego and Riverside counties in a short span of time, has now been detected in Orange County. The GSOB was discovered in approximately 60 trees on County park land in northern Orange County. Since GSOB is transported in oak firewood, it is critical that Californians keep firewood local and not move it out of the area.

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