Go to the Workout app , tap next to an Outdoor Run or Outdoor Cycle workout.
Tap the Race Route tile, then select Last or Personal Best.
During the workout, your Apple Watch shows how far ahead or behind you are compared with the route you’re racing as well as the remaining distance. If you deviate from the route, Proceed To Route appears on the screen until you return to the original route.
Available Race Routes appear as a suggested workout when you’re close to the starting point of a route you’ve previously run. You can view all available routes by tapping Suggested, then selecting Route.