These practice guidelines are the official statement of the Wilderness Medical Society on the best methodology for handling prehospital care for illness and injury occurring in wilderness areas. This, the 5th edition of the Wilderness Medical Society guidelines, presents what the WMS Panel of Expert Reviewers feels is the best approach for the management of remote area injuries and illness. This edition nudges the Guidelines towards evidence-based medicine with category stratification of its recommendations. Wilderness Medical Society Practice Guidelines for Wilderness Emergency Care includes such topics as: *Wilderness evacuation*CPR techniques*Hypothermia*Water purification*Heat-related illness *Orthopedic injuries and much more