This 6-week stamina module plan is perfect for runners who find they lack stamina – that strength you need toward the end of races and hard workouts.. This Plan is designed for runners that are focused on racing the Half Marathon-Ultra Distance. This plan is perfect for transitioning into after a base plan. I’ll have you perform a weekly stamina workout of varying types – from cruise intervals to tempo intervals to tempo runs to steady state runs. My research shows that running a variety of ...