I have a 305 and today mapped out a route in Garmin express, successfully transferred it to the watch, ran the route (with a few changes) and uploaded it. There is, however no map/course showing with no elevation. There is the splits data showing distance, speed etc. Why therefore is there no map?
Also, last week I ran a course which again showed up distance and speed etc but no course map. This was the first time anything like this has happened to me and I am confused. My runs and cycles in the week have worked fine, showing the route and all the rest of the data.