I was born 30 min from Busselton so I am well aware of the race. Numbers may be high as there are two Ironman races in WA a year but based on the depth of pro fields I wouldn’t call it a big race. I’m taking nothing away from her ability and achievement but found your boasting of it being a the biggest in the southern hemisphere a bit of an exaggeration.
High profile and iconic perhaps? I can’t think of a better swim than round the jetty on a clear, flat day.