If you are shooting to enter your first race, or you are currently looking to improve your weakest link, this is the time! If this is your off-season, this is a perfect time to undertake the project of mastering swimming before next season. And many triathlon coaches agree that you should spend the most time working on your worst sport.

Below, I have included a 12-week swim training plan for a Sprint Distance triathlon, followed by similar plans for an Olympic Distance, Half Ironman or Long Course swim, and a Full Ironman. These can be applied to a 25-yard or 25-meter pool.