Watch: Moment triathlete 'loses control of body', almost collapses on track after 8-hour run

In what perhaps were the most frightening visuals to have come out of a track, Great Britain triathlete Kieran Lindars was seen collapsing and getting up to complete an eight-hour race in Amsterdam.

On a hot September day, Lindars, defending his title at the Challenge Almere-Amsterdam, was on course to complete the marathon when he stumbled and collapsed on the track multiple times before eventually finishing the race.

Speaking with an international media outlet, Lindars said, "The scariest thing for me was being totally out of control of my body."

Describing the final moments on the track, the 26-year-old added that he was going in and out of consciousness. Lindars started to overheat after nearly an eight-hour run and struggled to stay on his feet while approaching the finish line. The world number 7 finished second behind Nederlands' Menno Koolhaas.

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In the short clip that Landers shared on Instagram, the triathlete can be seen holding onto barriers as the crowd threw its weight behind him to complete the finish line. Linders even unzipped his tracksuit in the final moments to let his body cool down. The video has been viewed more than 14 million times.

"From about 300 metres, I don't really remember what happened; my body went into a bit of a protective mode where it was just essentially shutting off," he told BBC.

"I think it was the first time I'd found my limits and that was really scary."

Linders also thanked the medical staff for constantly keeping an eye on him as he attempted to finish the race. He also suggested anyone undertaking a physically demanding exercise "listen to their bodies" and not push themselves too hard.

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