1. U.S. Forest Service Pass: This pass is good for all US Forest Service trailheads in Washington and Oregon. You can check out which sites are covered here. You can purchase a day pass for $5 or an annual pass for $30.
2. Discover Pass: This pass is required to park at Washington State managed recreation sites including Washington State Parks, Department of Natural Resources lands, and Department of Fish and wildlife trailheads. A day pass is $10 per car and an annual pass is $30 per car. Unfortunately you can only use the pass for one car. You cannot switch the pass between multiple household vehicles.
3. The America the Beautiful Interagency Annual Pass: This pass gives you access to any national park or other federal site that charges fees for one year. This pass is $80 per year.
For more detailed information on passes for the Pacific Northwest go here. For other areas I would google "recreation passes for (blank) state".