Playing with the on-line map may also raise the question whether the Arlington Bike Map should also add in the Sixth Street route skirting around the National Foreign Affairs Training Center and running through Fort Myer. While the route on 8th Street is perfectly acceptable, I personally disliked the steeper hills and extra cars around George Mason and 8th Street on that route. Until something better comes along, the Sixth Street route would be my preferred bike route to bypass the Columbia Pike congestion.
