An Aussie dude posted a cool youtube (see below) how to take the silver line to Ashburn to some gravel routes in Loudon Co. Anybody tried this?
Gravel Cyclist youtube
I66 and other westbound NoVA traffic has been my greatest obstacle to doing any rides out west. The traffic is brutal and ruins any positive experience of a scenic ride. I really miss rides around Middleburg, the plains, Front Royal but no way am I going to sit in traffic 1 - 2 hours each way.
If the metro to Ashburn is doable then maybe rides out west are a possibility again.