The riders were part of a 3,000-strong contingent taking part in the Snowy Ride to raise funds for a children’s cancer charity.
A 37-year-old woman from Wollongong was found dead after her bike ran down an embankment near Bombala on Saturday.
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Police believe she lost control on a sharp bend but her companions did not realise she was missing until they reached Bombala on Friday night.
A 57-year old man from Nowra also died south of Cooma when he hit a fence trying to avoid foxes on the road.
In an incident on Sunday, a 67-year old from Rosebud in Victoria died south of Eden on his way home.
Without wanting to pre-empt the coroner it might be a good idea to end the ride at a campsite (although any place that can sleep 3,000 is turning into a big piece of logistics).