I usually do at least a 200km ride once a month. The longest ride I've ever done was London-Edinburgh-London 1,400km over 5 days in August 2017.
It's a great way to see the country. Ireland is pretty rural with lots of quiet small roads. From Dublin I can head south in the Wicklow Mountains or West into the bog lands of the Midlands, North into the market gardening/arable farmlands, East would be into the sea!
I started doing long-distance (Audax) cycling eight years ago, it's a great way to avoid parenting. As a middle-aged woman I decided I wasn't finished with my body yet and I wanted too see what else it could do.
I am the Mumsnet cliche of the spouse with a "hobby" that takes them out of the house all day. 
Anyway, back to cats... I could bore for Ireland about cycling.