Summer McIntosh broke the women’s 200-metre butterfly world record Sunday night during the first day of the Canadian Swimming Trials [1, 2].

The achievement marks the end of one of the longest-standing records in women's swimming, signaling a shift in the global competitive landscape for the event.

McIntosh, who is 19 years old [1], clocked a new world-record time of 2:01.65 [1]. The performance took place in Montreal, Canada, where the national trials are currently being held [1, 3].

The previous world record had stood for 17 years [1, 2]. While some reports vary on the exact timing of the previous mark, it was approximately 2:01.00 [1].

McIntosh had specifically targeted this record as part of her competitive goals. To improve her butterfly speed, she has been training at the University of Texas [4, 2].

This record-breaking swim occurred on Day 1 of the trials, establishing McIntosh as a primary contender heading into upcoming international competitions [2].

Summer McIntosh broke the women’s 200-metre butterfly world record Sunday night

The breaking of a 17-year-old record suggests a significant evolution in training and technique for the 200-metre butterfly. By surpassing a mark that remained untouched since 2009, McIntosh establishes herself not just as a national leader, but as the definitive pace-setter for the event globally.