The third edition of Running Medicine arrives at a critical moment. Our understanding of biomechanics, exercise physiology, rehabilitation techniques, and injury prevention strategies continues to evolve rapidly. New technologies allow for more precise assessments, while innovative treatment modalities offer promising avenues for recovery. Concurrently, running demographics are shifting, with more diverse participants across age groups, body types, and athletic backgrounds embracing the sport—each bringing unique medical considerations. What makes this text exceptional is its blend of scientific rigor and practical application. The authors have curated contributions from leading experts while ensuring the content remains accessible to clinicians across various specialties. From the latest research on running gait analysis and the frontline utilization of diagnostic and intervention ultrasound by sports medicine clinicians to the emergence of orthobiologic therapies for acute and chronic running injuries, this volume serves as both a comprehensive reference and a practical clinical guide. Since running medicine has emerged as a distinct subspecialty within sports medicine, for healthcare providers treating runners, whether in high-performance settings or community clinics, having an authoritative resource that addresses the full spectrum of running-related conditions is invaluable. This book equips clinicians with the tools to help runners overcome injuries and optimize performance, ultimately enabling more people to experience the profound physical and psychological benefits that running offers.