Jessica Cohn 
Free Running [PDF ebook] 

Where ordinary people see walls and railings, some athletes see a challenge. Readers will discover who those athletes are-free runners. Using a mix of gymnastics and running, these daring few will guide you through the history of this high-flying world. Full-color photographs show the gravity-defying feats of free running, while educating readers on the science the sport. Each book also provides interactive challenges to encourage the exercise of both body and mind.