Optimize Your Training

WKO4 will give you advanced training insights using your unique physiology.
  • Power Duration Model

    Introduced by Dr. Andrew Coggan, the Power Duration Model allows for the estimation of peak performance over a wide array of time durations.

  • Individualized Data Analytics

    WKO4 does away with general principles and allows you to analyze your performance around your unique physiology.

  • Dynamic Charts Library

    Get access to charts created by a community of forward thinking athletes and coaches who are discovering new ways to optimize their training.

"WKO4 allows me to dive deeper into the data and helps me find ways I can improve my individual performance."

- Kate Johnson, Master’s Women Road and Mountain Bike racer
WKO4 for Mac
$169
  • Log your training
  • Upload workouts
  • View workout and fitness summaries
Download and purchase not available on mobile devices
WKO4 for PC
$169
  • Log your training
  • Upload workouts
  • View workout and fitness summaries
Download and purchase not available on mobile devices

WKO4 Education

Learn how to get started with WKO4 and view additional resources including webinars, how-to videos, and courses.

Learn More