With the luanch of Summer Games in London, Bing Maps to help the pople in the UK, and those travelling in and around London for the 2012 Olympics games, released the "expanded coverage for transit directions."
In partnership with TheTrainline.com, Bing Maps "added routes from thirty one train lines to complement our existing London Underground and bus routes."
For example, "if you want to travel sans auto from London to Millennium Stadium in Cardiff to watch the Great Britain vs. Cameroon women's football match on 28/7, just visit Bing Maps, type "London to Millennium Stadium" in the search box, then click the transit icon. Next, choose "Arrive by" and select 28/7/2012, then set the time to 15:15 and hit "Go". Any of the three routes displayed will get you to the venue with over two hours to spare!," Bing explains.
Here is the result: