Custis Trail

The Custis Trail runs for 4 miles from mile marker 4 of the W&OD in Arlington down to the end of the Mount Vernon trail in Rosslyn.  It follows and runs alongside I-66 for its duration.  Although it's kind of through the parks that line the highway, at times there aren't really sound barriers so it can be a loud ride.  Also, while the highway is relatively flat, the trail tends to go up to the level of bridges, then down to the level of underpasses.  It makes for a very hilly ride. 

Not the best trail in the area, but its not too long, and the only good way to bike to Rosslyn and from there get to the Mount Vernon trail or into DC.  I will also occasionally go up this way on my way home for work for a change in scenery.

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