There are two ways to see how many laps are in an activity:
- Before you enter an activity, you will see a loading screen. On that screen is a complete description of the activitiy, including distance and the number of laps, OR
- When you are in an activity, on the left side of the screen, is a lap counter that indicates what lap you are on and how many total laps are in the activity. If the lap counter is not there, click on the ESC key, then the UI link in the top of the Activity Info & Controls screen and switch the Distance slider to Always On.