Example:
Week 1 --10 miles
Week 2 --11 Miles
Week 3 -- 6 miles (Light Week or Cutback Week)
Week 4 -- 12 miles
Week 5 --13 miles
Week 6 -- 7 Miles (Light Week or Cutback Week)
Week 7 -- 14 miles
Week 8 -- 15 miles
Week 6 -- 8 Miles (Light Week or Cutback Week)
Week 7 -- 15 miles
Week 8 -- 16 miles
etc