Route and track sharing web sites
Topografix is a starting point for GPX, but the format is so common now that google will produce tens of thousands of hits too.
http://utrack.crempa.net/ - a web site where you can upload a GPX file and it generates graphs, which can be saved to a PDF file.
http://wheresthepath.googlepages.com/wheresthepath.htm - a web site where you can create routes over OS GB 50k maps. The routes can be saved to a GPX file for import into ViewRanger. GPX files can also be loaded. The routes can also be seen over aerial photos.
http://maps.the-hug.net/index.php - a web site that displays Landranger maps. GPX routes and tracks can be loaded, GPX routes can be created, edited and saved.
http://www.bikeroutetoaster.com/ - a site for planning routes. It can load and save GPX files. However, it can only read tracks, not routes. If you plan a route on this site and save to GPX, it will import into ViewRanger as a track. Select that track, press the cursor pad centre and choose Edit > Route from track to convert it into a route.
You can create routes over road and aerial maps using Microsoft's Bing - see our instructions.
http://maps.innersource.com/ - a web site to which you can upload tracks. You can control whether they are public or can choose to make them only visible to selected people such as friends and family.
http://www.marengo-ltd.com/map/ allows you to create a route in a web browser, then write a GPX file. The maps used are from google, so show roads but not paths and rights of way.
http://www.mtbsharp.co.uk/routes/index.html has lots of mountain bike routes. They are not in GPX format but can be converted using GPSU.
http://www.geocaching.com/ is the best starting point for geo-cachers. ViewRanger can also import LOC files.
http://www.walkingworld.co.uk has lots of UK walks. Most require a subscription or payment. It has routes in GPX format. All the routes are also available through ViewRanger's route search.
http://www.countrywalkingroutes.co.uk has routes some of which are free but most are paid for, mainly in the MMO format, so again can be converted with GPSU.
http://www.navaid.com/GPX/ generates aviation related points in a GPX file.
http://www.sharemyroutes.com - a site for route sharing.