Neil Williams wrote:
I'd say that cycle routes are very subjective as there are many
factors that can make them good or bad to any given individual
cyclist, and as such they're best planned with a map and experience.

I'd also say that the lie of the land comes into it, which an A-Z won't
show hills; my route to work has a cycle path most of the way, but ends
up going up and down hill far more than taking the main road, which is
mostly flat.

--
Simon Hewison