Your Half Iron Valencia 19 Week Race Plan for Intermediate and Advanced Athletes. Valencia features a sea swim, rolling bike and flat run. We will use the very latest techniques of polarised training to get you to get you to the finish line in great shape & enjoy your training journey on the way. This plan is 19 weeks with a general phase of 10 weeks, a specific phase of 7 weeks & 2 week taper. This plan is ideal for competitive athletes with a goal of achieving a PB at their next Half race. ...