In reply to Blue Straggler: Indeed! Probably why it's so hard to find stats. I guss the phrase I might be looking for is 'in to' whether you watch live, on tv or read websites and blogs about it. As I say I have an inkling lots of people are 'into' pro cycling more so than some of the lower down sports on Choss' list like swimming but I could well be wrong. One reason I think so is cycling is one if the most interesting sports to follow with a lot more depth than some others and the fans are not from one demographic: young, old, male, male, female, cyclist, non-cyclist the crowds you will see at a cycle race have a bigger mix than you may see at other popular sporting event, though not all for sure. I know plenty of people who have been introduced to pro cycling, and not just the tdf, and they love it and do not follow any other sports, I.e. are not sports fans.