According to the deal, Crocmedia's SEN radio network will broadcast the Games, scheduled for July 24 to August 9.

The group’s 1116 SEN and 1629 SEN SA are among the stations to air the competition, supported by a dedicated Olympic channel on 1377 SEN+ and the SEN app.

Seven's key sports broadcasters, including Bruce McAvaney for athletics and Basil Zempilas for swimming, and will be heard across the radio airwaves.

"It is clear that Australian audiences have long loved the Olympic Games on the radio and it has been such a part of how many Australians follow and cheer along for our national teams," said Crocmedia chief executive officer Craig Hutchison.

"The SEN family of stations is honoured to get the chance to bring our listeners the coverage of our Australian teams as we hunt for gold in Tokyo.

"With the most time zone friendly Olympic Games in recent memory and key sports and finals during the Australian day time and early evening, it promises to be one of the most consumed Olympics ever.

"We thank Seven for the opportunity to be part of its Australian broadcasting experience."

Seven has a media rights agreement with the International Olympic Committee (IOC) which includes broadcasting rights for Tokyo 2020.

"The Olympic Games are for everyone and we want the powerful stories and magic moments of the Games and the Athletes to reach and inspire Australians across the country," said Kurt Burnette, Seven West Media director Of Olympics and chief revenue officer.

"We’re delighted to have secured this partnership with Crocmedia to bring Tokyo 2020 to commercial AM radio.

"With just a one hour time difference between Tokyo and the east coast of Australia, Tokyo 2020 promises to be an unmatched event for Australian sport lovers to be able to watch and now listen wherever they are."