VIDEO | A 16-year-old Canadian woman set a world record in the 400-meter freestyle

The 16-year-old Canadian swimmer, Summer McTinosh, set a new world record in the 400-meter freestyle. She swam her all-time best time at the national qualifiers for the World Championships held in Canada. McIntosh swam a time of 3:56.08, beating the record held by Australia's Ariarna Titmus by 32 hundredths. This McTinosh record is…

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