This 50 Mile - 100K training plan includes my tried and true, scientifically-based and proven workout sequence to give you the endurance and stamina that an ultra race demands. You'll improve your endurance with progressing long runs and I'll have you run back to back long runs on many weekends so you get used to running on tired legs.  I'll have you do some test runs so you can try out your gear and nutrition plan and I'll boost your stamina and running economy with my specialty workouts. As ...