This 25-Week training plan is designed for Half IM distance Duathletes looking to improve on overall race performance. This training plan is a run based plan, and is for athletes with some foundation in bike, run or athletes with an endurance base in at lease one of the two disciplines. If your goal is to improve your training efficiency (train smarter not longer), or set a new PR, this is the perfect plan for you. This plan provides consulting by email with USAT Coach Michael Cottle, CoachCottle@gmail.com, also built into this plan, bike/run lactate threshold testing. At the end of the plan you will have the fitness necessary to complete your Half IM distance duathlon!