Fortunately, the treadmill can serve as the perfect tool for runners to keep their consistent base training schedule. Ahead, you’ll learn why the treadmill makes consistency and base building far more achievable, and a four-week base training plan to bridge the gap between unstructured running and a full marathon training block. How a Treadmill Helps With Base Training ConsistencyBase training is best understood as the aerobic-focused foundation your marathon prep sits on. If that sounds like you, the next step is structuring those four weeks, and that’s exactly what the following base training plan is designed to do. The Ideal 4-Week Base Training PlanTo put these base training principles into practice, Flynn designed the perfect four-week base training plan exclusively for Runner’s World readers.