. First 3 in each heat (q) and next 2 fastest (q) advance to final. The mixed 4 × 400 metres relay event at the 2020 summer olympics took place on 30 and 31 july 2021 at the japan national stadium.

Results from the men’s 4 x 400m relay athletics at the 2020 olympics in tokyo. The mixed 4x400m relay will be making its olympic debut in tokyo, a discipline featuring teams of two men and two women competing against each other in.