Just like IAAF had announced, the first result bellow 4:30:00 counting from the beginning of 2017 would be considered the first World Record in this distance, which women have only competed officially since last year.
Inês Henriques didn’t only do that but also lowered the best result of which there is record. The Portuguese covered the distance in 4:08.26, shaving two and an half minutes from the previous unofficial record, which had been set almost 10 years ago.
This means that “inaugural” doesn’t necessarily mean “short-term”.We need to observe the reaction of the biggest race-walking powers to the inception of this new distance in order to understand how this world record may further evolve.
Portugal itself isn’t far from the best race-walking countries, having taken 6th and 12th places at the women’s 20 kilometres race walk during the Rio Olympics.