A new world record has been set in the 200-meter butterfly swimming event. Summer McIntosh, a 19-year-old swimmer, achieved this feat at the Canadian trials.

Her time of 2 minutes 1.65 seconds broke the previous record. The old record had been in place since 2009, set by China's Liu Zige.

Further details about this achievement are available from the source, including more information about the event and the swimmer's background.