Images of Katie Ledecky’s 800-meter record swim are boggling minds

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RIO DE JANEIRO — Katie Ledecky destroyed her own world record in the 800-meter freestyle event Friday, earning her a fourth gold medal at this year’s Olympics in Rio.

She’s the first female swimmer to sweep the 200, 400 and 800 freestyle since Debbie Meyer did it in the 1968 Olympics in Mexico.

She posted a time of 8:04:79, which left her a leisurely 12 seconds to wait at the edge of the pool for the next competitor to arrive, silver medalist Jazz Carlin from Great Britain. In third place was Boglarka Kapas of Hungary.

Ledecky won by such an incredible margin that the images posted on Twitter seemed unreal.