The first of the three crashes was at Tolmie, about 25 kilometres north-east of Mansfield on Thursday afternoon.
In that incident it is believed a man was travelling along Mansfield-Whitfield Road when he lost control at about 2pm.
The 64-year-old Wagga Wagga man was taken to hospital, also with non-life threatening injuries.
Police believe all three were heading to the popular Superbike World Championship at Phillip Island, which began on Friday and finishes on Monday.
Mansfield Highway Patrol Senior Constable Paul Swan encouraged all riders attending the event to take extra care on their journey through new areas.