http://www.mapmyrun.com/routes/view/111746913Is that viewable? It should be public. The ride was good. Mt Vernon Trail to Four Mile Run Trail to Shirlington and the WO&D trail. I was supposed to cut over at the Bluemont Junction Trail at Carlin Springs Rd. but missed it and ended up taking the Custis Trail for 2 bonus miles. 17+ miles total, should have been 15 or so.