Washington DC Area

It depends if you're on the MD or VA side of DC. I lived there for over 15 years and can suggest the following

Lake Presidential (MD)
Blue Mash (MD)
Whiskey Creek (MD)
PB Dye (MD)
Worthington Manor (MD)
Westfields (VA)
Raspbery Falls (VA)

I'm a member at Worthington Manor, in Urbana MD. Great course. Whiskey Creek is a couple miles away and also a great place. Worthington is definitely tougher though. Both are worth the 30-40 minute drive from DC and if you play in the morning, you won't have to fight much traffic on I-270, coming or going.

Is that a member only course? From what I see most that are close are private clubs.