Using the 'Geo' tab in Real User Monitoring you are able to visualize session distribution across a map of the world.
If you navigate to the 'Geo' tab, and click on the 'Category' button on the right-hand side of the map you'll be able to select session distribution. This will switch the map and colour code the countries based on where the most sessions are. You can then click into any country to view further session/performance information for that country.
Product Manager, Real User Monitoring.