Web App: Ride With GPS

Ride With GPS is a useful bike route mapping app. The main advantages it has over Google Maps are for plotting some trips in advance (using the web app) as it has:
(a) The ability to have both the Google Terrain and Bicycling layers turned on at the same time.
(b) The ability to see gradient information for climbs as well as elevation. The gradient makes the biggest difference as to how difficult the hills are on a route.

Links:
> Ride With GPS web app
> Ride With GPS mobile apps

Related Better By Bicycle Posts:
> How to maximise your cycling when faced with hills