Rio de Janeiro: Swimmer Katie Ledecky of the United States has set a world record in women’s 800m freestyle event at the Rio Olympics.
 
Ledecky completed the distance in 8 minutes 04.79 seconds here on Friday, reports Sputnik.
 
The previous world record (8 minutes 06.68 seconds) was also set by Ledecky in January this year.
 

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