Chiz Dakin's cycle touring adventures almost happened by accident, when after a local photography trip by bike she realised that she'd done 50 miles in a single day with a reasonably heavy load. This led to the disconnected logic that if she could do that once, she was now ready to tackle multi-day cycle touring, and two weeks later set out on the Land's End to John o' Groats route.
Since then she's done several other multi-day trips including a pioneering Welsh coast cycle route (600 miles and 16km of ascent) but still maintains that you don't need to be seriously fit or fast to enjoy long multi-day routes. (She certainly makes no claim to being either!) She has also recently won an award for her photography.