Okay, is this the thread where it's finally appropriate to talk about beeturia?

I experienced it twice this winter, both times immediately after long runs. Really freaked me out - I thought it was blood in my urine! The second time, I put two and two together with the beets I'd eaten. My urine was normal color at all times except for immediately after the long run. Looked it up on the Internets, didn't find anything directly on point, figured my kidneys just function differently on a long run.