This plan is a style I like to call the Alternator. What this means is that one week will be a traditional week with two SOS days during the week and then a weekend longrun. The alternating week, you will have an SOS day, a medium long run (designed to be easier) and then a harder SOS on the weekend. The design is to make a harder week alternating with an easier week. This schedule will build to 6 days per week and peak at 60 miles per week.