I'll be arriving in DC from the south. I found out about the Mt. Vernon Trail, it looks awesome. Before I get to that though, does anyone know of a good route from Richmond to Mt. Vernon? I know about Adventure Cyling, but if I can help it I'm going to try to save the mere $11 that the map cost.(yes, I know I'm cheap). Also, while cycling around DC are the bike paths very well labeled? Any other tips on cycling in DC would be much appreciated!