Display the landmarks sub-menu and select Explore landmarks ;

Locate your track or route, for instance inside a GPX file like in this example;

Long-click on a track and click on Auto select;

Choose which waypoint to automatically select: the Closest, the Following or the Previous;

The track is displayed on the map, and a waypoint is automatically selected. When the map moves (you can lock it to the current GPS location), another location is automatically selected if needed.