If you haven't got one, get a decent paper map of Europe and start to put paper sticker markers on the major cities of the countries you want to visit. Then look at the scale. It is very easy to get carried away, thinking that Germany looks about the same size as England, when it most definitely isn't.
If you are having trouble imagining the distances and the roads you want to travel on from A to B, start to relate them to something you know.... Starting at home. Here is an example:
You live in Warwickshire, let's say Warwick.
From Warwick to Penzance (next stop America) is 310 miles.
From Warwick to Lowestoft, about as far east as you can go and still stay dry, is 180 miles.
From Warwick to Thurso on the far tip of Scotland, is 580 miles.
Now, how would you chose to ride to Penzance or Thurso and then on the next day and the next and the next and the next and still stop to see things?
Now let's look at your map to see where 180, 310 and 580 miles gets you to in France, starting at Calais. I chose Calais as most people are familiar with it.
180 miles will bring you to Reims, in short nowhere other than a nice cathedral and gallons of champagne.
310 will bring you about 40 miles short of Dijon. You are not yet halfway down France but you would have got to Penzance.
580 will bring you to Orange, so you haven't reached the Mediterranean yet, but you would have run out of Scotland and the UK.
I deliberately chose a route that is near enough a straight line north to south, to help you picture the distances.
Now try to imagine riding from Warwick to the far tip of Scotland on scenic (non-motorway) roads in a day, whilst all the time enjoying stops to look at the glories of the Peak District, the Glens and the bogs.... That's what you'll be trying to do to get to Orange.... And doing it the next day and the next and the next.
In short, you'll be foolish to ignore motorways if you really want to get on ticking off countries. I did your route (near enough) avoiding motorways... But: I started each day wheels rolling by nine AM, stopped only to splash in fuel and have a glug of water or coffee, eating in petrol stations or I bought a stick of bread, cheese and a bit if fruit to eat in a lay-by and wasn't much bothered where I stopped or if it was 8pm at night. I was also riding a Honda Blackbird with just a bit of Ventura soft luggage and knew (near enough) where I wanted to go. It was pre-GPS, so I stuck to the A type roads (taking motorways if there was really no sensible alternative) using half decent maps and hand written instructions.
You too can do it but give it some sensible thought first.
PS On the Turkey Trot a few Easters ago, we went from London to Milan in a day on the way down and Budapest to London in a day on the way back..... It's not hard to believe that we took motorways all the way.... And that we didn't stop for flower pressing.
If you are having trouble imagining the distances and the roads you want to travel on from A to B, start to relate them to something you know.... Starting at home. Here is an example:
You live in Warwickshire, let's say Warwick.
From Warwick to Penzance (next stop America) is 310 miles.
From Warwick to Lowestoft, about as far east as you can go and still stay dry, is 180 miles.
From Warwick to Thurso on the far tip of Scotland, is 580 miles.
Now, how would you chose to ride to Penzance or Thurso and then on the next day and the next and the next and the next and still stop to see things?
Now let's look at your map to see where 180, 310 and 580 miles gets you to in France, starting at Calais. I chose Calais as most people are familiar with it.
180 miles will bring you to Reims, in short nowhere other than a nice cathedral and gallons of champagne.
310 will bring you about 40 miles short of Dijon. You are not yet halfway down France but you would have got to Penzance.
580 will bring you to Orange, so you haven't reached the Mediterranean yet, but you would have run out of Scotland and the UK.
I deliberately chose a route that is near enough a straight line north to south, to help you picture the distances.
Now try to imagine riding from Warwick to the far tip of Scotland on scenic (non-motorway) roads in a day, whilst all the time enjoying stops to look at the glories of the Peak District, the Glens and the bogs.... That's what you'll be trying to do to get to Orange.... And doing it the next day and the next and the next.
In short, you'll be foolish to ignore motorways if you really want to get on ticking off countries. I did your route (near enough) avoiding motorways... But: I started each day wheels rolling by nine AM, stopped only to splash in fuel and have a glug of water or coffee, eating in petrol stations or I bought a stick of bread, cheese and a bit if fruit to eat in a lay-by and wasn't much bothered where I stopped or if it was 8pm at night. I was also riding a Honda Blackbird with just a bit of Ventura soft luggage and knew (near enough) where I wanted to go. It was pre-GPS, so I stuck to the A type roads (taking motorways if there was really no sensible alternative) using half decent maps and hand written instructions.
You too can do it but give it some sensible thought first.
PS On the Turkey Trot a few Easters ago, we went from London to Milan in a day on the way down and Budapest to London in a day on the way back..... It's not hard to believe that we took motorways all the way.... And that we didn't stop for flower pressing.

Great advice from everyone on this blog this is what forums like this are all about,for my 2 peneth I did St.Tropez to Calais in one go up the autoroute, didnt start out with that intension I just thought I wonder if I can get a bit further,It was a F...... nightmare got off the bike couldnt walk was bent over for about 10 minutes but It set me a yard stick or an 800 mile stick!! On the other side I rode to Malta via all the Countries I needed to get to Scicily for the ferry then back to Naples. back up Italy French riviera Spain And back took about 6 weeks a few hundred miles a day or sometimes none met great people have great memories and pics.So do what you feel like doing take the advice from all the above and adapt it to your adventure thats why we all on here do what we do..enjoy and ride safe