Cutting-edge advice on how to achieve your personal best， for everyone from casual runners to ultramarathoners。

In 80/20 Running， respected running and fitness expert Matt Fitzgerald introduced his revolutionary training program and explained why doing 80 percent of runs at a lower intensity and just 20 percent at a higher intensity is the best way for runners at all levels--as well as cyclists， triathletes， and even weight-loss seekers--to improve their performance。

Now， in this eye-opening follow-up， Fitzgerald teams with Olympic coach Ben Rosario to expand and update the 80/20 program to include ultramarathon training and such popular developments as the use of power meters。

New research has bolstered the case that the 80/20 method is in fact that most effective way to train for distance running and other endurance sports。 Run Like a Pro （Even If You're Slow） shows readers how to take the best practices in elite running and adopt them within the limits of their own ability， lifestyle， and budget。