C:\Program Files (x86)\Steam\SteamApps\common\RailWorks\Content\Routes\00000034-c000-0000-0000-000000002013 If you go to the railworks folder you'll see an application called 'name my route', run it and it should match the route ID to its name. Edit: for the assets go to C:\Program Files (x86)\Steam\SteamApps\common\RailWorks\Assets\RSC\KentHighSpeed