ViewRanger is a mapping and navigation app that can be downloaded for free from Google play or the Apple App Store. It can be used for planning, navigating, recording and sharing on or off-road routes and is particularly useful for cyclists and walkers.
Routes can be created from GPX files captured by a Garmin GPS (or similiar device), then edited, annotated and published. The majority of the routes on Goring Gap Cycling have been recorded in this way. This provides a very easy way to manage and present a catalogue of routes online. There is no commercial relationship whatever between Goring Gap Cycling and ViewRanger, it’s just that I think it’s a very useful product.
ViewRanger can be used totally for free with open source mapping, or you can buy premium maps such as Great Britain’s OS or France’s IGN.