Australian athlete Joanna Wietrzyk has apologised for continuing an HYROX competition in Beijing after soiling herself.
Wietrzyk said she regretted her decision "not to have stepped off the track".
She has retroactively withdrawn from the race, which she won on the day, and forfeited points earned in the event.
Australian athlete Joanna Wietrzyk has learned "there is more to life than racing" and apologised for continuing to compete in an HYROX competition after soiling herself.
In a contest last weekend in Beijing, Wietrzyk soiled herself and went on to win the event, but has now withdrawn from the race and forfeited all points earned.
Videos of her continuing the race with faecal matter running down her legs were shared widely on social media.
Amid scrutiny over why she continued, Wietrzyk has issued an apology in a statement posted on Instagram.
"I want to offer my sincere apology to the people of China, my fellow competitors, the spectators and the HYROX organisers for what happened during the race in Beijing," the post said.
"I felt fit and healthy at the start of the race, with no reason to expect any illness.
The athlete said she had learned from the experience "that there is more to life than racing and knowing when it is right to step away".
"I know my actions had an impact beyond myself, and I am genuinely sorry to everyone who was affected."
In the statement, Wietrzyk said she had chosen to retroactively withdraw from the race and hand back the points she earned from competing.
Within the HYROX framework, athletes accumulate ranking points based on their placement and finishing time. The points contribute to national and global ranking systems.
HYROX, a popular fitness competition launched in Germany in 2017, sees competitors combine running with multiple workout station challenges, including sandbag lunges, burpees, sled pushes and rowing using shared equipment.
The athletics brand, which came over health and safety standards, has since apologised for "not reacting immediately" to the incident.
HYROX co-founder Moritz Fürste had earlier taken to Instagram to apologise "to all who were directly or indirectly involved".
"HYROX made a mistake by not reacting immediately during the race," he added in a statement on Instagram.
"In the end it is my job to foresee these potential incidents — and I did not."
He said new event procedures and rules were being drawn up to "prevent situations like this from happening again".
The rules now state that if a "racer's blood, vomit, urine, or faeces poses a welfare or contamination risk to the racer or to other racers, a Race Director may withdraw the racer from the race on medical grounds".
Before the rule change, competitors were penalised for littering, spitting, or clearing their nostrils onto the race course, which some online described as a double standard.