It’s great to see a vast underground multi-level parking garage put to a creative new use. The Diamond Derby returned to Crystal City, landing in a garage a few blocks from their debut in March. Crystal City doesn’t have many exciting venues, so this bike race was a good fit. Biking in the D.C. region isn’t normally a spectator sport; the derby was a fun opportunity to watch folks hustling around the underground space, many in costume. The final race added a haystack obstacle, with the top-level cyclists practically flying over and smashing through. Here are some photos from the event.