Here are some notable dog parks in and around Seattle.
This by far is the best dog park in Seattle. Located in the Sand Point neighborhood, Magnuson is a massive city park that has dedicated 8.6 acres of the park to an off-leash dog area. This park includes a mix of an off-leash open space for running and playing as well as gravel trails. The dog park also features a portion of the waterfront for pups to swim and play. The little dog beach / cove is very busy during the summer months, but is worth visiting! This park also features a little dog area that is a fenced in portion for small dogs to feel comfortable running and playing with others of their own size.
There is parking nearby the dog park entrance. Hoses and water bowls are available for use.
Best for Residents in and around Sand Point, Laurelhurst, Lake City Way, U-District
On a hot day, this Woodland park off-leash area offers plenty of shade thanks to the coverage of all the trees. The dog park is not that large, and more in a shape of a circle. Since it is smaller, it offers quit the opportunity to chat-it-up with fellow dog owners. This would be a good spot for older or less rambunctious dogs since it is smaller. If your dog loves to socialize, this would be the place for you!
Best for Residents in and Around Greenlake, Fremont, Phinny Ridge, Tangletown
If nearby the Lower Queen Anne / Seattle Center area, the Kinnear Park offers an off-leash area nearby the lower portion of the park. The park is located on a hillside, so the best access points are from Roy Street. The dog park is nearby the tennis court and offers a 5,400 square foot fenced-in off-leash area for dogs to run wild. This off-leash area is covered in wood chips and has some neat tree stumps/logs to play on. This area is often shady as its built between the natural forest growth.
Best for Residents in Queen Anne, Lower Queen Anne, Interbay
If you live or are traveling through or staying in Downtown Seattle, the Denny Park Substation is one of the only off-leash areas in South Lake Union and Downtown. It's mostly busy with apartment dogs who are cooped up all day and need to burn off some energy. The artificial grass is a bonus for those who are not able to clean off their dogs before bringing them back into the apartment buildings. I dont think its the most optimal park in Seattle, but if in a pinch in downtown, this is your best option.
Best for Residents in and Around South Lake Union & Downtown Seattle, Lower Portions of Capitol Hill
Golden Gardens is one of Seattle's most popular beach, waterfront and sunset spots. This park has dedicated one-acre of land in the northern upper portion of the park to an off-leash dog park. This has an open space, covered in wood chips as well as covered spaces to keep owners dry if raining.
Best for Residents in Ballard and Crown Hill Area
Located off 28th Avenue west is the Magnolia Manor Park that has dedicated 21,000 square feet to an off-leash area. What residents love most about this wide open space is the “chuck it” game zone and dog drinking fountain. The park also features Magnolia’s first P-Patch, and park space with picnic table, benches and walking path.
Best for Residents of Magnolia and Interbay