Walker will compete in front of a home crowd in Te Awamutu as she chases a third title in four years at the Championships.

The London 2012 Olympic silver medallist, who is a member of the International Olympic Committee Athletes' Commission, could face the challenge of her team-mate Rebecca Petch tomorrow.

Petch is competing on her home track and will look to improve on her silver medals at the last four editions of the Championships.

"I think it's awesome that I get to start the year on my home track, I'm looking forward to racing in front of a home crowd and racing on a top standard track that the club have put a lot of work into," said Petch.

"BMX in New Zealand and Oceania is definitely growing and it's exciting to see the depth of riders improving.

“A lot of riders are based in Europe and America now so it's always exciting when we have a decent number of riders to line up against here.

"It's going to be a challenging Oceania's because of the number of good riders that are attending but will definitely give it my best shot and see what happens."

Former winners Leanna Curtis of Australia and New Zealand’s Zoe Fleming are also due to compete.

Frieswyk will seek to defend his men’s title but the Australian could face competition from compatriots Kai Sakakibara and Maynard Peel.

Nathaniel Rodway will bid to make the step up in the senior event having triumphed in the under-19 competition last year.

Over 50 riders are set to compete in the elite and under-19 events, while more than 500 riders are due to contest the challenge classes.

The elite and under-19 categories will offer International Cycling Union (UCI) points and qualifying opportunities for the 2019 UCI BMX World Championships in Belgium in July and the Tokyo 2020 Olympic Games.

"With BMX world champions, an Olympic medallist and nine previous Oceania champions we will be sure to witness exceptional performances across the elite and under 19 categories," said Tracey Gaudry, Oceania Cycling Confederation President.

“It is great to see this depth of talent in BMX in Oceania.

"To Cycling New Zealand, BMX New Zealand, Te Awamutu BMX club and the Waikato District Council, race officials, support services, team managers and crew, and the many community volunteers, we extend our gratitude for your support in organising the 2019 Oceania BMX championships."