A-B Route Curation
This is pretty great, although a bit limited as the website just gets started. A-B is a route curation site where specific cycling routes are developed by “tastemakers, influencers, cycling journalists,” and more for the user to search in a given area. The search function of the site also allows you to narrow your options by varying skill levels (beginner to experienced) or preferred types (Gallery tour, Leisure, Training, etc.), where you can then view a map of the route with descriptions of specific portions of the route, some regarding terrain, others directional, and others as tourist tips.
A-B is currently expanding their invited curators, including Rapha photographers, cycling apparel makers, bike brands and magazines, which will significantly expand the route options for you to choose. Routes are primarily in the US and UK, with a couple new routes in New York being developed as well as another in LA. Check back as the site expands.