When runners want information and advice, they turn to "Runner's World" magazine - the world's leading authority on running and the publication that has helped to define and popularise this form of recreation and exercise. Now, the editors of "Runner's World" have created a new series of books on all aspects of running. Authoritative, affordable, handsomely produced and extensively illustrated, each of these four-colour 96-page books focuses on a particular aspect of running. Together they form a comprehensive library that belongs in every runner's home. "Competitive Running" begins by examining the reasons why it's good to race - for example, it boosts motivation and helps keep you working at your best. It then sets out some basic training principles before giving detailed training regimes for various types of races: 5K, 10K, half-marathon and marathon. It also tells you what you should eat and drink before, during and after races, and how strength and flexibility training can help your performance.