Wonderland Trail Itinerary Planner
Use the trip planner to automatically generate a suggested itinerary based on your preferred daily mileage.
Drag and drop the green tents to other campgrounds to adjust your itinerary.
Recommended map and guide books
The best map I've found for the Wonderland Trail is the National Geographic Trails Illustrated Map of Mount Rainier National Park.
It's laminated so it's tough and durable, it has plenty of enough detail for anyone not climbing the mountain, and costs about ten bucks from Amazon.
If you want a printed guidebook for preparing for this hike, a great read is Tami Asars' 2012 book, Hiking the Wonderland Trail: The Complete Guide to Mount Rainier's Premier Trail.
For a guidebook to take on the trail with mile-by-mile notes, Bette Filley's book is the most thorough available. Discovering the Wonders of the Wonderland Trail doesn't seem to be in print this year, but it's readily available used from Amazon and the trail notes are excellent.