No offense meant here, but 300km isn't a very long ride.
none taken and I wrote that myself:
OK, 300km ain't that far
There is virtually nowhere you can go sensibly on one day in continental Europe that is 700mls away. From here to Barcelona. OK and a day's trip. To Alicante, 1,100mls and I have done that with a car and two drivers in one sitting.
Paris:400mls
Bruges:400mls
Amsterdam:350mls
Vienna:400mls
Turin: 460mls
All places I have riddin to with a backpack, a tankbag and some luggage tied on the back. There are more places of course.
Otherwise 500mls is about the limit unless one does a round trip just for the sake of riding. Obviously without luggage. I have done 350mls day trips thru the French Vosges mountians for fun.
European driving is quite different as anyone who has lived and driven here knows. Especially German driving where there are no speed limits on the motorways (backed off my Haybusa at 180mph due to the traffic but the bike felt perfectly safe) unless posted and country roads are limited to 62mph. In France in town it is 37mph. In the rest of Europe, it is either 74mph or 80mph on the Motorways and 62-67 on two-lane roads. These are for motorcycles more like minimum speed that limits. On country roads and two-lane highways, my minimum speed is 80mph or higher - unless the area is infamous for speed traps and even then, most traps photograph from the front to get the driver's face and plate number(all countries demand plates front and rear on 4-wheel vehicles) and , obviously, that presents no problem for a rider.
Unless you are going from A to B as quickly as possible, most riders (as opposed to bikers= Harleys and other such) stay away from the motorways entirely. Generally, one looks for twisty country roads. This Sunday, there as an outing in Belgium in the Ardennes I want to go to: 520km to get there, ±250km thru the hills and obviously the same distance back. We'll see if I have time.
All this of course on either the SZR or the Skorpion. I dod increasingly use the 1954 BSA for everyday stuff and even short trips which are getting longer as I get to trust the thing more.
I don't own a car (OK, my wife has one that I can use if she doesn't need it to go to work with) and ride all year round; errands, to customers (with tools in the tankbag and/or backpack), to go somewhere else and of course just for fun. That doesn't count the time spent racing. Even so, sometimes racing is less strenuous than riding on German motorways 'cause there aren't any idiots in cars. Racing is much safer as well.