TrainingPeaks is the perfect fitness app for endurance athletes of all ability levels. Whether your goal is to run a half marathon, finish a Gran Fondo or complete an IRONMAN, our app will help you reach your fitness goals. TrainingPeaks is compatible with with over 100 apps and devices including the Apple Health app. Plus, our Auto-Sync feature allows you to automatically upload workouts completed with your Apple Watch or popular fitness devices such as Garmin, Suunto, Polar, Coros, Fitbit and