Almost home today and my chain got a pair of loops in it. I'm not quite sure how it happened, but I was in the smaller ring and in a high gear, so I guess I had too much slack in the chain and probably hit a bump. It was annoying, but relatively easy to fix once I took a minute to figure out how it was sitting.

9 years riding daily and that's the first time I've ever had that happen. I googled it at home later, and it seems like it usually happens when the rear wheel is off. I didn't see any references to it happening while riding. I guess I should measure the chain and make sure it isn't also stretched.

It was an absolutely beautiful day though!