Part of my track is shown dashed on the map — why?

For performance reasons the whole track is not shown in detail by default, because loading it could otherwise take a long time. If you switch to the map settings (the little wrench at the top right of the map), you can configure the following:

• How many entries are shown in detail (that is, coloured depending on the speed). Only the detailed part can be tapped, for example to move or open an entry.
• You can also set an offset: out of 500 entries you may want 250 shown in detail, starting at entry 200 (so everything between 200 and 450 in that case). The rest (1–199 before and 451–500 after) is only shown dashed.
• You can also tap on the date to show a single day in detail.
• The coloured lines can be based on speed or on status. With speed you can define which colour is used from which speed onwards (when it turns red and how long it stays green).