The Seattle Times has an interesting article showing some insight into the development of the last of the Great Washington State Birding Trails, the Pudget Sound Loop.
Check out the article "Audubon birders rove Puget Sound to complete the Great Washington State Birding Trail" on their website.
To see the already available maps online (for free) go to the Washington State Audubon website. Trails to download include:
- Cascade Loop;
- Coulee Corridor, covering Central Washington from Grand Coulee to Othello;
- Southwest Loop, covering Olympia to the Columbia Gorge;
- Olympic Loop, circling the Olympic Peninsula;
- Sun & Sage Loop, spanning an area from Snoqualmie Pass to Walla Walla;
- Palouse to Pines Loop, covering Asotin to Republic.