The trail at the boundry between Arlington and Falls Church also has snow and ice problems. I have seen reports on other fora that while passable, there are still problems west of Arlington. http://wandodtrailreport.blogspot.com/
I rode the W&OD this evening from Shirlington to Vienna. There are still a couple spots with snow patches, but there is a track through that is at least a couple feet wide the entire way. The problem on Saturday and Sunday mornings will probably be where melt off has refrozen and you get black ice, so be careful until it melts off.
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