To launch fullscreen mode, click the fullscreen icon at the top right of the map. In addition to exploring an activity in greater detail, the fullscreen map also includes the activity's elevation profile, so you can easily interact with the route. To exit fullscreen mode, click the fullscreen map icon at the top right again. In Chrome and Firefox, you can also press the Esc key to exit.
Fullscreen maps are supported on Chrome, Firefox, and Safari.