Alongside training, there are two other factors that are just as important to your race preparation: rest and nutrition.
Unfortunately a lot of athletes, especially those who are starting in triathlon (and other sports in general), focus only on training and practically ignore the other two.
To get the best out of yourself on both race day and during training, you have to give your body the nutrients it needs to optimize performance and endurance, and you have to allow it to regenerate properly.
Having a routine training schedule, sleeping properly at night (8-9 hours), going to bed and waking up at the same time everyday, and allowing at least 6 hours between each training session will allow your body to recover from and prepare for the rigors of training and competition.
To help you with nutrition, both on race day and during preparation, you can download the Guide below.