It was introduced at the 1936 Summer Olympics in Berlin, as a way for Adolf Hitler to highlight the Nazi claim of Aryan connections of Germany to Greece.
[2] Two secondary relays carried the flame from Olympic Stadium in Berlin to the off-site aquatic venues: Grunau (for the rowing course), and Kiel (yachting).
The cauldron in Kiel sat in an old Hanseatic galley in the bay.
A second relay carried the flame from Wembley, where the Games were based, to the sailing centre at Torbay, via Slough, Basingstoke, Salisbury, and Exeter.
Japan relay started on 25 March 2021 in Naraha and ended on 23 July 2021 during the opening ceremony.