Strong Ballarat contingent is vying for qualifying times at the Athletics Australia Championship in Melbourne on Sunday.
Jared Tallent and Kelly Ruddick will compete in the Australian 50-kilometre Championship at Fawkner Park.
It is the final race within the qualifying window to obtain their 50km qualifying time for the 2020 Olympics and 2020 IAAF Race Walking World Team Championships.
Tallent requires a time of four hours and six minutes (4:06.00), while Ruddick will need a time of 4:40.00 respectively to meet the Australian qualifying standards in the women's.
The race will feature top international racewalkers including Swedish athlete Perseus Karlstom and 2019 World Championships Bronze Medalist Christopher Linke.
Elsewhere, Racewalking sisters Jemma and Alanna Peart will contend the under-20 10km women's racewalk.
Fraser Saunder will compete in the under-18 5km event.