Since not everybody knows about that new gym, it's called
Thomas Farm Community Center, and you can find it on
the badminton list I maintain
http://www.astro.umd.edu/~teuben/badminton/localplay.html
as number 18 on that list.

For those checking this list, if you see some outdated information,
let me know please,

peter

PS: the combo pass is far worse than I thought. I pay $35 for
Twinbrook (being a non-rockville resident). But a combo pass
is $90. Yipes. Even at $50 that's a no-go for me.