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Calendar of Events & Meetings

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Enjoy a festival, join a fun run, tour an interpretive site, or just make your own celebration with a family picnic or camping trip. Choose from dozens of activities and events throughout the year. You can submit your state park event via email to get it placed on the calendar. The Discover Pass is required for vehicle access to Washington state parks and state-managed recreation lands. For more information, visit the Discover Pass website.


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  1. Calendar Overlay Lake Sammamish State Park (2)

Lake Sammamish State Park

  1. Mud Factor

    July 12, 10:00 AM - 5:00 PM @ Lake Sammamish State Park

    "Seriously Fun, 5K Obstacle Run!" . Mud Factor is a family fun run with participants 4 years old and up. This is a 5k(3 mile) running course social athletic event. Obstacles are placed throughout the course with several mud pits constructed to enhance this unique experience. This is not a competitive event, with no timing or scoring whatsoever. Discover Pass required.

  2. The Great Inflatable Race

    July 25, 9:00 AM - 2:00 PM @ Lake Sammamish State Park

    This event is an approximate 5k fun run with 8-10 inflatable obstacles spread throughout the course. Discover Pass required.