It's great - I shall do it again next year! I enjoyed doing the Century ride but had wished it's round island and more than just 105km for century challengers for next year's route.
Also, I think there are unnecessarily way too many 'Marshals' (sweepers) in that event. One female marshal go 'blah, blah, blah,..' - she chat with others too much and I had to try ride faster to break myself away from the peloton.
Few of the marshals didn't helped much being around i.e., they don't signal for potholes. They are generally a distraction or an obstruction!
I hope they keep the so-called Marshals at a reasonable number for next year :(