How can you increase your speed? Most runners ask this question once they become more accomplished. Indeed, one of the best things about running is being able to compete not only against others but also against yourself. Improvement is almost always possible, but it is also dependent upon so many factors, including one's age, current fitness level, genetics, experience level, type of training program, motivation, etc. If you run faster this week, can you run even faster next? This chapter gives you insight into adding speed work to your workout.