I have put enormous effort into building routable cycling maps over the years: https://stevebennett.me/2015/01/14/cycletour-org-a-better-ma...

It's frustrating to me that after all these years, I still end up using Google Maps mostly. I haven't really come across a general purpose mapping tool I can use for cycling directions and routing, both on desktop and on my phone, in cities and in the bush.