The men's 50 kilometres walk at the 2019 World Athletics Championships was held in Doha, Qatar, on 28–29 September 2019.

[1] This race marked the eleventh world championships for João Vieira, tying his contemporary teammate Susana Feitor for the second most.

By 5K he had a 10 second lead over a chase pack of only four others, including the world record holder and defending champion Yohann Diniz and Olympic champion Matej Tóth, the rest of the field was 37 seconds or more back.

As they were approaching 10K, Diniz decided the man who had taken his 20K world record was too serious a challenger to his title and bridged the ever growing gap.

Suzuki first showed signs of cracking, stopping at the water station at 44K before getting back on stride.

Still with a huge lead, Suzuki struggled through the final lap while Vieira and Dunfee were applying the pressure.