In this completely revised, expanded, and updated edition, Walter G. Zyznieuski and George S. Zyznieuski describe sixty-nine trails that total more than eight hundred miles. Thirteen new trails have been added in this edition. All but four of the original maps have been revised and updated and many new photographs are included.

Since the first edition was published, there have been many changes along the trails or at the parks or forests where the trails were located. In order to update their book, the Zyznieuskis contacted the headquarters of each park and forest to obtain detailed and up-to-date information.

In the appendixes the Zyznieuskis provide information on obtaining trail maps, hiking organizations, and rules and regulations for Illinois state parks and recreation areas.

As in the first edition, the authors have hiked each trail they describe. It is their firsthand experience that makes it possible for them to provide reliable, detailed, and up-to-date information on each of these trails for Illinois hikers and backpackers.