Our Bike-to-Work day event is 1 May. We gather at a location just a couple of miles out, ride in together, do a few ceremonial laps around the main complex of buildings, and have some bagels and juice on the lawn. There are actually quite a few bike commuters here, but the place is so big and people's schedules are so varied, we're usually visible only in one-sies/two-sies. It's kind of cool when we all get together at the same time.