Book excerpt: From Triathlete magazine––the most popular source for triathlete information––comes an essential guidebook of weekly training plans for all skill levels. As popular as the swim-bike-run sport has become in recent years, triathlon training remains a daunting physical and mental challenge. From short sprints to Olympic distance events, this guide from Triathlete magazine provides athletes with different plans for every skill level, and shows them how to build up their training to reach their ultimate goal. Good-humored narrative text accompanies detailed workout schedules, guidelines, weekly goals, and coaching tips. Including off-season training advice and photo-illustrated stretches and exercises, this is the book triathletes need to stay at the top of their game.