Developed by TrainingPeaks, WKO4 analytical software is helping endurance coaches find new and innovative ways to use training and racing data.

WKO is designed to provide the same insights and answers for whatever sports you love. Hone in on each sport by setting a different threshold, customizing ...

TrainingPeaks and WKO4 are products that are designed help coaches and athletes succeed. While there is some overlap between the two, there are also several ...

Stamina: a measure of resistance to fatigue during prolonged-duration, moderate-intensity (i.e., sub-FTP) exercise. Units are percent of maximum, i.e., 0-100%, ...

WKO4 has introduced many new training metrics, among them is iLevels. These power levels are individualized and give you specific wattage and time targets ...