This is what the BikeArlington web site has to say about the county's bike culture:
"Arlington, Virginia is a great place to get around by bicycle. More than one hundred miles of multi-use trails, on-street bike lanes, and designated bike routes make it easy for cyclists to get where they need to go. If you don't have a bike, or don't have it with you, Capital Bikeshare is a convenient option. BikeArlington's goal is to get more Arlingtonians biking more often, whether they're commuting, shopping, or just having fun."