@Corjan-Meijerink, If you press a waypoint along the route, a window opens showing a picture when available, and the name plus the note for that waypoint. I think it would be fairly easy to add a line showing the distance the WP is from the start, and how far it is to the end.
@Michael-Doherty-0, I am most curious to why, with your specific routes, it is more important to know how far you are from the start, then from the finish?
Also I think when the setting "Show waypoint info" is on, it will display also the note in the top left infobox. if you are near it. You could use that, but I think any non-automatic method will not work, since deviations will always occur and the distance info is not accurate anymore.