Home › California › Irvine › William R Mason Regional Park
William R Mason Regional Park
4.7 ★★★★★ 2,214 Google reviews · Running trail in Irvine, California · Posted hours
Runner's snapshot
- Surface
- Paved
- Distance
- Not reported
- Shape
- Not reported
- Shade
- Tree cover
- Access
- Posted hours
Confirmed from William R Mason Regional Park's own listing, the park or land manager's website, and runner reviews. Blank cells mean we could not verify that fact — we would rather say "not reported" than invent one. There is no Easy / Moderate / Hard rating on this page on purpose: a one-word difficulty score tells you nothing about whether a trail suits your run. Surface, distance, shade and hours do.
Park has 300+ acres for picnics, softball, volleyball, golf, hiking & biking, toddler play & more.
What runners say about William R Mason Regional Park
“Mason Regional Park – Irvine, CA Right next to UCI, clean, quiet, and huge—over 300 acres with lakes, big open lawns, paved paths, and a legit wilderness section.”
“The park is truly beautiful, with plenty of open space and a peaceful atmosphere that makes it perfect for a relaxing walk or spending time outdoors with family.”
“The large lake with ducks and geese adds such a calming atmosphere, and the wide, shady walking paths make it enjoyable even on warm days.”
“The 9-acre lake is the highlight—it's so peaceful to watch the ducks and turtles, and if you’re lucky, you’ll see people sailing their model boats, which is always fun to watch.”
One of the most beautiful parks I've ever seen. This park is huge and clean with numerous wildlife and natural scenery. It across from a gorgeous golf course and around the corner from the University Town Center. The trail is fantastic and also very clean.
A great open space park with beautiful lake / pond. Though the parking is mentioned chargeable, didn't find them charging. If you prefer lakeside area go towards parking lot B , if you want to take kids to play area go towards lots d e f they are much closer to exit.
Had a really lovely walk around this park with my mom and dog. Geese and ducks and turtles abound. Clean restrooms and lots of spaces to spread out a blanket for a picnic or to linger and watch the fountain.
The park was extremely clean and very spacious and very breath-taking. The views were extremely nice and the people around were extremely respectful of my space. I had a really great time here with my family. I was able to picnic and walk my dogs all around the park.
Trail conditions & character
“The park is truly beautiful, with plenty of open space and a peaceful atmosphere that makes it perfect for a relaxing walk or spending time outdoors with family.”
“Parking inside costs money, and most nearby streets are private, but you can usually find spots along University or near Rancho Joaquin.”
“Just a quick heads-up for fellow pet owners: I’ve seen a coyote here a few times, so keep an eye on your dog.”
“Parking is easy and convenient, and the restrooms are usually clean (which is a huge plus when visiting with little ones).”
“The 9-acre lake is the highlight—it's so peaceful to watch the ducks and turtles, and if you’re lucky, you’ll see people sailing their model boats, which is always fun to watch.”
“The large lake with ducks and geese adds such a calming atmosphere, and the wide, shady walking paths make it enjoyable even on warm days.”
“Mason Regional Park – Irvine, CA Right next to UCI, clean, quiet, and huge—over 300 acres with lakes, big open lawns, paved paths, and a legit wilderness section.”
“There are a few area for water stations and that for the little critters also.”
Plan your run at William R Mason Regional Park
The practical stuff
- AccessPosted hours — posted hours below; park gates sometimes close earlier than the listing says
- SurfacePaved — asphalt or concrete. Fast and predictable, runnable year-round, and fine with a stroller
- DistanceNot reported. Trail systems often quote total path mileage rather than a single loop, so measure the route you actually want before you drive out.
- ShadeRunners describe real tree cover here — it makes a summer afternoon workable
- At the trailheadparking, restrooms, water — reported by runners
- DogsWelcome, per reviewers. Leash rules vary by park — the trailhead sign is the authority.
- Stroller / wheelchairReported as smooth and step-free enough for a running stroller or a chair.
- Websiteocparks.com
- Phone(949) 923-2220
Hours
| Monday | 7 AM–9 PM |
| Tuesday | 7 AM–9 PM |
| Wednesday | 7 AM–9 PM |
| Thursday | 7 AM–9 PM |
| Friday | 7 AM–9 PM |
| Saturday | 7 AM–9 PM |
| Sunday | 7 AM–9 PM |
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