If your goal is to develop the speed component of your running fitness quickly and safely, this is your training plan. The 7-week Level 0 80/20 Run Faster plan will boost your sustainable speed without overtaxing you or neglecting other fitness components. Featuring the proven 80/20 intensity balance described in Matt Fitzgerald's bestselling book 80/20 Running. TARGET ATHLETE This level is intended for runners with some experience who are ready to benefit from doing more speed-focused ...