This endurance racing plan is designed for more advanced racers who engage in 40-100 mile road and mountain races. This is the 2nd of three 30 day blocks in a 90 day plan, although it can be used as a standalone training block during a racer's build period. Racers who include this block in their workouts should have raced at least one 50-100 mile race in the past year, or at a minimum have a good ride base and be working towards an endurance racing event. Riders utilizing this plan should be riding 4-6 times per week, 1-4 hours per day with several hard or moderately hard rdies included each week.