Editor’s Note: This is part of a monthly feature on notable regional parks in Orange County, which is rich with places to get outside and have fun with the family and explore nature.

If you’re looking for a peaceful park to walk your dog, hike or enjoy wildlife by the lake, William R. Mason Regional Park is a great choice.

Spanning 345 acres, the park features 3 miles of paved biking and hiking trails, a 9-acre lake that attracts a variety of birdlife, playgrounds, a fitness course, and much more. About 123 acres of the park are wilderness with trails for exploring, you’ll often see quail, rabbits and occasionally roadrunners, park officials said.

A couple have a conversation while on the bridge at William R. Mason Regional Park in Irvine on Thursday, Sept. 11, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A couple have a conversation while on the bridge at William R. Mason Regional Park in Irvine on Thursday, Sept. 11, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
Turtles bask in the sun at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
Turtles bask in the sun at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)

The park, located adjacent to UC Irvine, was named after the president of the Irvine Company from 1966 until his death in 1973. Mason was instrumental in the donation of 345 acres of land for the park.

A park ranger recommends checking out remote-controlled yacht races by the members of the Orange County Model Sailing Club on Wednesdays, Saturdays and Sundays.

A woman walks takes her dog on a late evening walk around the lake at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A woman walks takes her dog on a late evening walk around the lake at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)

John Justeson, a resident of the nearby Regents Point community, said what he likes about Mason Park is “being able to walk our dog is No. 1, but it is just idyllic — lakes full of swans and turtles, families meeting and eating together.

“Beauty in an area where people can live alongside a great university.”

John Justeson, who lives in a community next to William R. Mason Regional Park, runs across the bridge with his dog in Irvine on Wednesday, Sept. 10, 2025. Justeson walks in the park nearly every day. (Photo by Leonard Ortiz, Orange County Register/SCNG)
John Justeson, who lives in a community next to William R. Mason Regional Park, runs across the bridge with his dog in Irvine on Wednesday, Sept. 10, 2025. Justeson walks in the park nearly every day. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A man power walks along the paved trail at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A man power walks along the paved trail at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
An American white pelican at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
An American white pelican at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A black-crowned night heron at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A black-crowned night heron at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A double-crested cormorant and turtles share a rock on the lake at William R. Mason Regional Park..in Irvine on Wednesday, Sept. 10, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A double-crested cormorant and turtles share a rock on the lake at William R. Mason Regional Park..in Irvine on Wednesday, Sept. 10, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A member of the grounds crew edges the grass along the paved trails at William R. Mason Regional Park in Irvine on Thursday, Sept. 11, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A member of the grounds crew edges the grass along the paved trails at William R. Mason Regional Park in Irvine on Thursday, Sept. 11, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A couple enjoys a conversation while overlooking the lake from one of the many picnic tables at William R. Mason Regional Park in Irvine on Wednesday, Sept. 10, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A couple enjoys a conversation while overlooking the lake from one of the many picnic tables at William R. Mason Regional Park in Irvine on Wednesday, Sept. 10, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
People enjoy an afternoon at William R. Mason Regional Park in Irvine on Wednesday, Sept. 10, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
People enjoy an afternoon at William R. Mason Regional Park in Irvine on Wednesday, Sept. 10, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A woman walks the paved trails at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
A woman walks the paved trails at William R. Mason Regional Park in Irvine on Tuesday, Sept. 2, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
Members of the Orange County Model Sailing Club, from left, Len Bose, Mike Fujita, and Gene Elliott, carry their model boats back to their cars after a day of sailing on the lake at William R. Mason Regional Park in Irvine on Thursday, Sept. 18, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)
Members of the Orange County Model Sailing Club, from left, Len Bose, Mike Fujita, and Gene Elliott, carry their model boats back to their cars after a day of sailing on the lake at William R. Mason Regional Park in Irvine on Thursday, Sept. 18, 2025. (Photo by Leonard Ortiz, Orange County Register/SCNG)

Get outside

Location: 18712 University Drive, Irvine

Park hours: 7 a.m. to 6 p.m. daily during the fall and winter; 7 a.m. to 9 p.m. during the spring and summer

Parking fees: $3 per vehicle entry weekdays; $5 weekends

Amenities:

• Amphitheater

• Ball Fields

• Bike Trails

• Bird Watching

• Dogs permitted on leashes

• Fitness par course

• Gazebo

• Hiking Trails

• Horseshoe Pits

• Interpretive programs

• Model Boats

• Picnic Areas

• Picnic areas

• Playgrounds for various ages

• Restrooms

• Volleyball courts

For more information, visit ocparks.com/masonpark

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