Intensity is the primary factor in a three-day training program. Each workout during the week has a specific focus and goal in mind, ranging from a speed workout, tempo run and long run. The speed workout incorporates short, high-intensity intervals such as 400 or 800 meter runs while the tempo run focuses on your goal pace in a three to five-mile run. The long run concludes the week and covers about 10 to 15 kms.