Sparqkids San Mateo Mariners Island Park

Mariners Island Park

Top pick Parent reviewed

Idyllic streamside park with Canadian geese, an adventure ship toddler area, zip line, rock climbing wall, and perfect picnic spots. A true hidden gem!

Ship themed toddler play area
Ship themed toddler play area

At a glance

Overall rating
Google reviews
4.5 · 113 reviews View on Google Maps →
Suitable for ages
Under 2
2–5
5–8
8–12
Features
  • Boats
  • Bike practice
  • Sandpits
Fenced
none
Bathroom
permanent
Parking
street
Changing table
yes
Neighborhood
Mariners Island
Address
750 Mariners Island Blvd, San Mateo, CA 94404, USA
Website
Official site →
🗺️ Directions 🧺 Reserve Picnic Area

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Parent Reviews

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Alice

Visited · With 3 yo and 2 yo

Mariners Island Park is one of those genuinely lovely surprises. Nestled between residential housing and across from office buildings, a peaceful stream running through the background, resident Canadian geese wandering alongside, and well-positioned picnic benches mean caregivers actually enjoy sitting here while kids play.

The playground itself delivers beautifully for all ages. The toddler area is designed as an adventure ship complete with sea creature ride-on toys, a playhouse, and a generous sandpit — charming and imaginative. Big kids get an impressive rock climbing wall, large slides, and a zip line that will keep them coming back repeatedly.

A sprawling grassy field makes spontaneous picnics easy, and a baseball field rounds out the amenities nicely.

A peaceful, well-rounded park that earns a dedicated visit.

Quick facts

Theme
Ship
Shade
partial
Shade sources
  • Trees
  • Built shade structures
Surface
wood-chips
Water feature
none
Separate toddler zone
Yes
Stroller-friendly paths
Yes
Drinking fountain
Yes
Reservable picnic area
Yes
Dogs allowed
Yes

Beyond the playground

Benches
7
Shaded seating
Yes
Picnic tables visible
Yes
Picnic area
Yes
Walking paths
Yes
Other features
  • Baseball
  • View
  • River / stream / creek / lake
Also worth knowing
Resident Canadian geese

Equipment

  • Baby swings
  • Climbing wall
  • Monkey bars
  • Regular swings
  • Ride-on toys
  • Sandbox
  • Medium slides
  • Tall slides
  • Zip line
Highest structure
medium
Also worth knowing
Toddler play structure has a ship theme, no theme for the big kid playground

Environment

Crowd
Light
Crowd type
Mostly toddlers
Noise
Quiet residential
Cell signal
Good

Maintenance

Equipment condition
Cleanliness

Hours

  • Monday: 6:00 AM – 10:00 PM
  • Tuesday: 6:00 AM – 10:00 PM
  • Wednesday: 6:00 AM – 10:00 PM
  • Thursday: 6:00 AM – 10:00 PM
  • Friday: 6:00 AM – 10:00 PM
  • Saturday: 6:00 AM – 10:00 PM
  • Sunday: 6:00 AM – 10:00 PM

Ready to visit?

Plan a visit or event here, or save this park for later.

🗺️ Directions 🧺 Reserve Picnic Area

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