C,
While your default description will be in KM for those distance-based runs, your Workout Details and device itself will default to your preferred metric. For example, your device will display 0.61 miles instead of 1 kilometer, it will prompt you at 0.61 miles instead of 1km, and your workout will be identical to an athlete who displays there workout in metric units.
It’s just like temperature. Does water boil at 100 Celsius or 212 Fahrenheit? Yes.
However, you can get your distance-based run workouts in miles as well, see https://www.8020endurance.com/run-distance-library/ and I’ve just shared the Miles library with you.
David
.
