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Unforgettable Spots for Outdoor Birthday Parties in Puget Sound

Pony rides, zip lines, kayaking and more fresh-air party fun

Published on: March 12, 2025

group of kids having an outdoor birthday party
Photo:
iStock

When the sun starts to return, no one wants to be inside, especially when it’s time for a birthday party. If you are looking for a sunny party venue, we’ve rounded up 13 outdoor birthday party ideas to fit any birthday kid’s style.

Whether you want to interact with animals, ride a zip line, splash in a wading pool, kayak, sail a boat or just chill out at a park, we have the perfect outdoor party setting for you. Many of these options fill up quick, so don’t delay and start planning that sunny-weather party today!

1. High Trek Adventures, Everett

Location: 11928 Beverly Park Rd. Bldg. C, Everett 

Are you planning a party for an adrenaline seeker? If so, you’ll want to check out the options at High Trek Adventures. There is a wide variety of party and adventure options, with climbing adventures for kids as young as 4 years old (see the website for specific requirements for each activity). Whether you are looking for a zip line, high ropes course, laser tag, climbing wall, mini golf or even axe throwing, you’ll find it here!   

2. Moss Bay, Lake Union, Seattle

Location: 1001 Fairview Ave. N., Seattle 

For a unique Seattle birthday party experience, take your guests kayaking on Lake Union! Moss Bay, a well-known watersports center that also offers many camps for kids, books instructional group tours that can make for a memorable party. After the adventure, head to nearby Lake Union Park for cake and presents, or smaller groups can gather at the picnic tables at the marina. 

3. Mounger Pool, Seattle 

Location: 2535 32nd Ave. W., Seattle

There is just something about an outdoor pool that feels special. Mounger Pool in the Magnolia neighborhood in Seattle is a well-loved summer spot. The pool can be rented for a birthday party; there are lots of options to chose from. Be sure to plan well in advance, this is a popular spot. Don’t forget the sunscreen!  

Two boys playing in Mounger pool
Having a great time at Mounger Pool. Photo: Kari Hanson

4. Farrel-McWhirter Farm Park, Redmond

Location: 19545 Redmond Rd., Redmond

This gem of a park in Redmond feels like it is out in the country, with wide-open spaces dotted with picnic tables and family-friendly trails. You can take your party guests on a fun and educational tour to see pigs, goats, rabbits, chickens and other farm critters. Guests will love an old-fashioned guided trail ride by horse or pony. After the fun activities, gather in the party room for photos, games, crafts and cake. Party packages are available year-round on Saturdays and Sundays, and you can book a time slot online.

5. Canopy Tours Northwest, Camano Island

Location: 332 N.E. Camano Dr., Camano Island

For an unforgettable zip line adventure, book a Canopy Tours excursion on Camano Island. You’ll ride in a Unimog vehicle into a forested area and then whoosh along six zip lines (the longest is 660 feet). The package also includes two short trail walks and a final 47-foot rappel that is velocity-controlled for an easy descent. Participants must weigh between 65 and 280 pounds and be at least 48 inches tall. Kids younger than 12 must be accompanied by an adult. Pregnant women aren’t allowed to zip. The facility has tables and shade canopies for birthday cake and presents. 

6. Kelsey Creek Farm, Bellevue

Location: 410 130th Pl. S.E., Bellevue

Another fun Eastside experience, this Bellevue farm boasts a playground, trails and farm animals, as well as farm education programs. Kids can spend the first 45 minutes of a two-hour party interacting with and learning about the resident pony, sheep, rabbits, and goats. After petting the animals and visiting the historic barn, children can make a farm craft or decorate cookies, depending on what theme you pick. Each party begins with a group activity led by a member of the farm staff and is followed by a one-hour room rental for cake and presents. Room location varies for each type of party, but all rooms are located indoors and include amenities such as a refrigerator, freezer and microwave.

Note: Birthday parties are not available during the summer, due to the farm’s camp schedule. So keep this one in mind for a fall party!

kids looking through a fence at Kelsey Creek Farm
Waiting to say hello to the animals at Kelsey Creek Farm. Photo: Kathryn Mueller

Awesome local parks that are perfect for celebrations

Note: Visit the park websites to make picnic shelter reservations.

7. Mud Mountain Dam Park, Enumclaw 

Location: 30525 S.E. Mud Mountain Rd., Enumclaw

Mud Mountain Dam is a U.S. Army Corps of Engineers flood-control dam and recreation center located on the White River. This hidden jewel of a park in Enumclaw has playgrounds, a wading pool with a huge fountain, hiking trails and lots of open space. Older kids will enjoy throwing a Frisbee or kicking a soccer ball, while the younger set will splash merrily in the wading pool and explore the playground. There is plenty of shade and lots of picnic tables to go with the beautiful views of the White River.

8. Newcastle Beach Park, Bellevue 

Location: 4400 Lake Washington Blvd. S.E., Bellevue

Newcastle Beach Park is Bellevue’s most popular beach park. Lifeguards are on duty for beach swimming in Lake Washington during the summer. There is also a colorful children’s play area, nature trails and a 300-foot dock. Reviewers say that the playground equipment is geared toward the 8-and-younger set. The beach is sandy, so don’t forget to bring your sand toys. There are lots of grassy areas and picnic tables. Bring your bug spray, because water can mean mosquitoes!

9. Gene Coulon Memorial Beach Park, Renton 

Location: 1201 Lake Washington Blvd. N., Renton

Located at the south end of Lake Washington, Gene Coulon Memorial Beach Park is the jewel of Renton. When the weather cooperates, take a dip in Lake Washington at the lifeguard-monitored beach swimming area (summer months only), or stay dry and enjoy the great playground equipment. The park also offers an awesome playground, horseshoe pit, sand volleyball courts, tennis courts and a paved walking path along the lake. For a fun twist on the traditional party offering of pizza, treat your guests to fish ‘n’ chips from the Ivar’s or Kidd Valley concession stands.

playground at Gene Coulon Memorial beach park
The great playground at Gene Coulon Memorial Beach Park. Photo: Julie Dodobara

10. Grass Lawn Park, Redmond

Location: 7031 148th Ave. N.E., Redmond

Many reviewers call Grass Lawn Park the gold standard in parks for the entire Eastside. There is something for everyone here, from toddlers to adults; with three playground areas, a spray pad and climbing rocks for all abilities, as well as baseball and soccer fields and tennis and basketball courts. Add the open areas, plentiful water fountains, picnic tables, public art and a dome-shaped shelter that can be reserved, and Grass Lawn Park has it all!

11. Carkeek Park, Seattle

Location: 950 N.W. Carkeek Park Rd., Seattle

This 220-acre park in Northwest Seattle has it all: hiking trails, wetlands, meadows, a forest, a bridge to a sandy beach with great tide pools on minus-tide days, plus a playground with a famous salmon slide. Carkeek is perfect for kids who want to explore nature and parents who want to stay cool. You can also check out the fruit trees in Pipers Orchard and walk the Pipers Canyon Story Trail. There are plenty of grassy areas and picnic tables available for free, or you can rent one of two covered shelters. 

kids in the water at Carkeek park
Braving the cool waters of Puget Sound at Carkeek Park. Photo: Nancy Chaney

12. Powell-Barnett Park, Seattle

Location: 352 Martin Luther King Jr. Way, Seattle

Located in South Seattle, Powell-Barnett is also known as “castle park” because its restrooms are built to resemble castles. The playground has a plethora of fun equipment, with separate areas for older and younger kiddos so that a variety of ages can play peaceably. Equipment includes a huge weblike climbing structure in addition to the usual slides and swings.

13. Sammamish State Park, Issaquah

Location: 2010 N.W. Sammamish Rd., Issaquah

Lake Sammamish State Park is a 531-acre park with a lot to boast about. It has a fabulous state-of-the-art playground, two lakefront beaches, kayak and paddle board rentals, plus beautiful hiking trails through forests and wetlands. Three large covered picnic shelters are available to reserve online. The park also has a generous 475 unsheltered picnic tables, plus 80 barbecue grills on stands. Note: All guests will need a Discover Pass to enter the park.

Feeling hungry? During the summer months, head to the Sunset Beach Cafe where you can grab a variety of food and snacks, including Zeek’s Pizza, Ben & Jerry’s Ice Cream, hot dogs, soda, snacks and drinks. The cafe is open weekends in May and September and daily from mid-June through Labor Day. 

Tips for a great park party

  • Double-check the park website a few days before your event to make sure everything is open for business as usual.
  • Go to the park early, at least an hour ahead of the party start time, and stake out a table if you didn’t reserve a shelter. Mark your spot with a plastic tablecloth or balloons. Bring a big blanket or two in case you end up on the grass.
  • Be sure to have a way to cover food so flies and other critters don’t join your party. If you’re packing perishables, bring enough ice and a cooler for safety.
  • Pack extra towels, bottled water, sunblock and bug spray, because you know that someone will forget theirs.
  • Have a backup plan in case of rain.

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Editor’s note: This article was originally published several years ago and was most recently updated by ParentMap’s associate editor, Kari Hanson, with new images and a thorough fact-check.

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