This six-week plan is good to fill the time between segments. These are intended for when you want to continue to build fitness or need to work on a specific aspect of training. For instance, this hill block is perfect for a couple of scenarios. - Trying to have hills to become stronger or before you are entering a training segment that will be on a hilly course. - When you are looking to improve speed, but struggle with traditional speed work. - Going into a hilly marathon segment- i.e. ...