Blake Island Marine State Park

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Are you a boater craving island time? Do you paddle the Puget Sound on your days off? Then we have the perfect island escape.  

Accessible only by boat, Blake Island offers a change of pace not far from Seattle. This destination features blue waters, peaceful trails, driftwood-scattered beaches and views of the city and Mt. Rainier.

Once off your boat or kayak, let your boots or bicycle take you down miles of trail to the island's interior, where forest animals and birds make appearances. Or stay near the water and fish, dig for clams in season or go scuba diving. Arriving by human-powered watercraft? Hunker down in one of the Cascadia Marine Trail campsites at the west end of the island for majestic sunsets over the Olympic Mountains. 

Whether you're lounging on your vessel or kayaking the Cascadia Marine trail Blake Island will exceed expectations.

Park features

Blake Island Marine State Park is a 472-acre, marine camping park with 5 miles of saltwater beach shoreline and approximately 655 acres of saltwater bedland. The park is reachable by personal boat only. 

  1. Activities
  2. Boating
  3. Camping
  4. Maps

ADA amenities/facilities

  • Restroom

Use our interactive ADA recreation map to search for other state parks with ADA amenities and facilities.

Picnic & day-use facilities

Two picnic shelters with a fire circle are available. No electricity is available. Fires are permitted only in designated fire circles at individual campsites. Barbecue grills are located in the day-use area.

Group Camp Reservations: Year round

Shelter Reservations: Year round

Winter season hours: 9 am - 8 pm

Shoulders and Peak season hours: 9 am - Dusk; call park office for posted dusk times



  • 7.5 miles of bike trails
  • 8 miles of hiking trails

Water activities & features

  • 1,500 feet of moorage
  • Boating
  • Clamming
  • Crabbing
  • Diving
  • Fishing (saltwater)

Other activities & features

  • Beach exploration
  • Bird watching
  • Interpretive activities
  • Mountain biking
  • Fire circles (2 sheltered)
  • Horseshoe pits (2)
  • Volleyball field
  • Wildlife viewing

Interpretive opportunities

The history of the Trimble estate appears on a sign at the site of the former Trimble mansion. Blake Island was once the private preserve of the William Pitt Trimble family. Native plants are interpreted in signage on the nature trail.

Additional information

  • Reservations can be made for day-use facilities, group camp and select campsites up to nine months in advance from booking date. To make reservations call (888) 226-7688 or online at Reservation Booking
  • Activities must not damage park resources, leave rubbish, decorations or items that may be hazardous to wildlife   (examples: confetti, rice, sidewalk chalk, silly string etc.)
  • Firewood gathering is not permitted on the island.
  • No trash receptacles are available. This park is strictly pack-in / pack-out for all trash.  
  • All professional filming and photography require a permit. Permits take up to 60 days to process. Click here for more information Film and Photography Permits Information
  • A recreational license is required for fishing and shellfish harvesting at Washington state parks. For regulations, fishing season information, or to purchase a recreational license, visit the Washington Department of Fish and Wildlife.
  • Printable park brochure (PDF).