Ireland

I'm in the south east of Ireland, working, doing some touring.
I don't want to get into generalisations about nationalities, but things are easy here. They'll put your bike on the coach, they'll put it on the train (there's a charge - but transport, generally, is cheap - none of this book six months in advance stuff). They won't look at you like you've offended the gods of bureaucracy of you just show up.
There's a route from Clonmel, around the Nire Valley, across a mountain, down a spot called the Vee and from there to a town called Lismore. Then a few kilometres to Cappoquin and from there down to the coast at Youghal. I think it's what Sean Kelly used to do (or maybe Stephen Roache).
The mountain bit is properly wild and panoramic and really gradual (like kids could do it), the bit into Lismore is a forest with a river running beside the road, from Lismore to Youghal is a bigger forest with a bigger river.
I don't want to get all poetic on your asses but it's mega pretty.
I think it's about 60k. Very beautiful and very easy. Nothing approaching an A road. You'll pass about ten cars and they'll go by you really slowly. And you go through a lot of varieties of landscape in a short time. Also, you can drink a Guinness outside a pub and people will say hello without anyone thinking that means there has to be a conversation. (Actually some lycra'd up guy did cycle alongside me one morning and started chatting. I was terrified. Never happened to me before. Turned out he was a nice, interesting chap.)
A lot of Ireland's beautiful. But this is fairly undiscovered. I think it's my favourite ride.
The boat train from London's £45.
Do it.