Does this actually happen? Because the times I've been, it seems like there's no special group set out; just two groups - one of them fast, one slow with the slow ones leaving first and fast ones flying past on the run in to Charlwood.
I doubt I'm going anyway with weather pretty atrocious (it's thunder and rain as I type), but the speed doesn't seem to be too leisurely..... I was riding 17mph+ on the flat the majority of the time.
Anyway, just a question hehe.