Canada’s Summer McIntosh won her first-ever Olympic gold medal in the 400-metre individual medley on Monday in a dominant victory that saw her finish 5.69 seconds ahead of American Katie Grimes.

The effort, in front of another full house at the rocking Olympic venue, continued McIntosh’s global dominance in what has become her signature event and distance. She has held the world record for more than a year, most recently lowering it to 4:24.38 at the Canadian Olympic trials in Toronto this May. She came to Paris as the reigning champion two years running, towering over a field that she was expected to dominate.