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? Or are you visiting Seattle and eager to explore Tillicum village and the island or camp overnight but don't have a boat? Argosy cruises is your ticket to the island. 

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

Once off the boat, 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, kayaking the Cascadia Marine Trail, or enjoying Tillicum as part of a tour, Blake Island will exceed expectations.

Park features

Blake Island Marine State Park is a 1,127-acre, marine camping park with 5 miles of saltwater beach shoreline. The park is reachable only by tour boat or private boat. Argosy Cruises provide Blake Island Excursions offering guided trail hikes, kayaking and light meals at the Tillicum Longhouse Café. Click here for more information and booking:  Argosy Fast Ferry- Blake Island.

  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



  • 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
  • Argosy Cruises provides Blake Island Activities to include fast ferry transportation and drop off for overnight camping during the summer season. For reservations / information, call Argosy Cruises (206) 623-1445 or visit Blake Island Activities and Fast Ferry.
  • Kayak rentals available through Vashon Adventures in the main day-use/harbor area.
  • 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).