There is way to many markers on that map, totally unecessary.
This means that you have 13 TomTom files to upload to your TomTom and you will have to swap files frequently as you pass each 1/13 of the journey.
You could do with sitting down with TYRE and just putting in the locations you need and waypoints to make sure you go on the roads you want, you can have up to 48 in 1 itinerary file, if you have more then 48 you need to have several files.
The journey doesnt look that long so I would say if I can do 7,000 miles round Europe over 3.5 weeks in just 2 interary files, around 60 waypoints and destinations, then this should be a easy route to plot.
If you want the files just nod and ill uploaded them somewhere for you.