I can't change mile to kilometers on apple watch

How can i change mile to km in my apple w… - Apple Community

Miles or Kilometers

On your iPhone, in the Health app, go to summary then tap on walking and running distance,scroll down to the bottom and tap on unit then choose mi or km.

Or;

In the settings app on the watch

Tap on workout,scroll down to the very bottom and tap on units of measure and change your units here.