Ashlee Mundy died at Dunedin Hospital on December 31, 2012 of a diffuse cerebral injury caused by a blunt force injury to the head, Coroner David Crerar said.
Ms Mundy received her injuries the day before she died when her horse Elleaye clipped its hoof or hooves with those of a leading horse and fell in a race at the Kurow racecourse, Coroner Crerar's finding said.
Similar deaths of other jockeys killed in race situations had been investigated by coroners in recent years, he said.
"Elleaye was racing at approximately 60 kilometres per hour and came to an almost immediate stop when she fell.
"Ashlee Mundy was projected at speed and from a height of approximately two metres to the track, to a point where she landed almost directly on her head.
"Any safety helmet designed to protect a rider in these circumstances is impractical."
Coroner Crerar said he made no recommendations.
"As my brother coroners have said previously, horse racing is inherently dangerous. Those participating accept some risk.
"Those involved in the administration of the industry protect the participants as best they can.
"It is hoped, however, that the death of Ashlee Mundy will prove to be a learning experience for the racing industry and that all of those involved will continue to develop safer practices in the future."
Coroner Crerar said there was no evidence of any failure by any individual to provide or take the appropriate care.
"All of the stewards and all of the jockeys who gave evidence made no adverse comment on the riding ability of Ashlee Mundy or, indeed, any jockey in the race."
In his finding, Coroner Crerar referred to evidence given at a previous inquest by Canterbury Jockey Club executive officer Tim Mills.
"Unfortunately, falls from horses including injury and sometimes death is not uncommon," Mr Mills said.
"Horse racing is an inherently dangerous sport and serious accidents do occur from time to time and these, unfortunately, are unavoidable at times."
