Next summer, I'm planning to do a very long bicycle trip. I'm not yet sure where it will take place, but I have 2-3 favorites. 1) from Stockholm to the North Cape 2) from Switzerland to Istanbul 3) from Switzerland to the Black Sea.
Now I have some troubles to guess how much time I will need for this. I'm not talking about days, but I'm not sure if this will take 3 months, half a year or a whole year.
That's why I'm interested if there are any rules (e.g. on average 30km a day) so that I can vaguely guess how long it will take?