From racer to novice, every triathlete and duathlete will appreciate and use this training diary and guide. Trilog , now in its 6th edition, is the best training diary available for triathletes and duathletes because of its many features. They Training Diary The 56-week undated diary lets users plan and track swim, cycle, and run training for 13 months. And because it's undated, users decide when to start using it. Training Guide Over 25 pages of training tips, workouts, and charts provide the basics for the novice and new ideas for the expert.