Ours was yesterday, in Adelaide, South Australia. I heard a figure of 5000 bikes this year. That's well down on the record of 16000 a few years back. That makes ours the biggest mass ride in the southern hemisphere. Was a great day out, no rain and T shirt weather. The ride is from the city, up the hills into the country to a small town footy oval where a party happens. It's great and about an hour ride. Then take the long way home. The event raises a couple hundred thousand + goods each year for underprivileged kids and families.
http://www.adelaidenow.com.au/news/south-australia/photos-fni6uo1m-1226778125...A pic of the cabbage and the wife's little monster at the venue