VLC has some Loudoun kids. Practices tend to be in Reston area or Loudoun. Hammers used to practice at the sports complex off of Evergreen Mills but they no longer practice there and I think they are at Word of Grace in Chantily. From what I have heard, those are the two major teams for Loudoun families unless you want to drive in further in for Madlax or to Maryland for a more competitive team.

Both teams have winter skills clinics that anyone can join; you could check those out to see if your son would be a good fit. I would check out their Instagram pages for information. You could also reach out to the coaches to see if your son could join a practice, although practices are wrapping up soon for the fall.

You can also check out the US Club Lacrosse page for last years' team rankings, I have heard it's not super accurate, but it can give you an idea. I don't believe this seasons' rankings are posted yet.

Hope this helps.