This article explains two ways to delete a workout from your Apple Watch.
How do I delete workouts on my Apple Watch?
You can’t actually delete the workout on the Apple Watch itself. The Watch doesn’t have a function to do that.
However, if your Watch is paired with an iPhone, all workout data is stored in the Fitness app (formerly Activity) on your iPhone, and you can delete the workout from there. Here’s how:
Open the Fitness app on your iPhone.
