Just start the application and it will automatically record your speed, direction, heading.

Featuring 16-point compass to show you which direction you're heading in, plus miles per hour, kilometres per hour, metres per second and knots.

Make sure you have enabled the app to access location serivces on your device. Check Settings->Privacy->Location Services-Speed Tracker the GPS Speedometer ->ON

Check your speed and direction from your Apple Watch with Speed Tracker GPS Speedometer

Enable the Today widget to check your speed whenever you like – including from the lock screen.

Note: Speed Tracker GPS Speedometer requires GPS to get your speed and direction. It may not work indoors, in tunnels, or around tall buildings.

Download the app and know your speed!