Hi, Joy - can you give us more of the context?
"Kur" without the umlaut is "cure," which is the course of treatment you get in the mud baths and such at a health spa (Kurort).

My Cassell's says die Kür is a gymnastic term for "optional exercise" or "free skating." So, I'm wondering if it also means "open swim." As a historical term, it can mean "election."

-Joe-