You have to be very careful in closer to town. Get on the W&OD and head west, once you get past Vienna it starts to get a little better, and west of Herndon is even better. There are some nice loop routes that leave the trail out past Leesburg. You just need to realize what you are dealing with in closer to town. We almost got taken out by a roller blader one day...dude had no idea how to stop.
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Tom
"It hurts so good..."