The Swim Fitness Builder (SFB) is an eight week training plan to build fitness for a swimmer currently confident swimming about 600-800m to be able to swim 1,600m confidently in a session. This is the third week of the training plan. I am providing the workouts from the training plan for FREE, through my website. If you’d like them as a training plan on TrainingPeaks, there is a link to purchase that towards the end of the article.