My running club is sponsoring this race, but even if I didn't have a direct interest in promoting it, I would still want to run this. It's reasonably priced, local (okay, okay, that's not universal to everyone. But you can stay at my house if you want!), offers a medal and technical shirt for participants, and the course is a nice loop through Ashburn and on the scenic W&OD.
The registration fee is $45 and $25, but the price goes up this weekend so check it out!