This plan is designed for a category 4/5 racer looking to get in a solid winter base. The athlete will make gains in endurance and will improve lactate threshold by following this plan. There are 4 training days/ week (2 weekday workouts and 2 weekend workouts). The longest ride length is 2.5 hours. Most workouts are hours 1-1.5. The rider can use HR, power, or perceived exertion to follow this plan. The athlete should consult with their doctor and be sure they are healthy enough to exercise at a high intensity before beginning this plan.