This is the Beginner PLUS Half Marathon Plan. This plan works best for athletes who haven't necessary run high mileage, but who have a consistent background in running - runners who have raced several 10ks and perhaps even a first or second half marathon with a goal of improving performance. This plan consists of 12 weeks leading up to a goal race. Athletes who choose this plan should have been running 3-4 days per week (13-14 miles per week) over the past 3 months, with the most recent longest run of 6 miles.