Washington to Baltimore
The 30 mile long urbanized Baltimore/Washington Corridor contains an international airport, three major highways, and lots of traffic. Thus, you would not expect this to be a good area for biking. However, there are suprisingly a few rural "bike-friendly" routes tucked in between the busy towns and highways.
The fringe areas of the two cities will take you through some questionable areas, so you might consider following this route with a group of friends. There are several hills along the route, but none are terribly difficult. Please be aware that much of this route is on-street. Although the majority of these roads are lightly traveled, many lack shoulder space. Thus, you need to be comfortable riding in these conditions. Due to road conditions, you may wish to avoid this route during weekday rush hour periods.
The total route length is about 47 miles each way. The round trip could be spread over two days,
thus making this a really nice weekend getaway. You can spend Saturday evening exploring Baltimore's
Inner Harbor and then make the return journey on Sunday.