If you already have the original Runtastic Apple Watch app, make sure you have updated it to the latest version in the “My Watch” settings of your iPhone. Also, it is important that you have OS 4 on your Apple Watch.
Log in to the Runtastic app, enable Apple Health permissions and ensure that all Apple Health “Categories” are turned on. Once these short steps have been completed, you’re ready to hit the road!
Then, just open the Runtastic app on your Apple Watch and press “Start”. Your activity type is already predefined as running, but you can always change it to another available activity type by tapping on "Running" and scrolling down.
Thanks to the Water Lock feature, you can start tracking in any weather conditions. The watch face will be locked and raindrops won’t change your settings or accidentally stop your activity.
Note: Please keep in mind that you will need iOS 11 and watchOS 4 in order to use the Apple Watch Standalone app.