The 16-year-old continues her meteoric rise in the sport by breaking a record previously held by Ariarne Titmus and Katie Ledecky. Find out more below
Canada's swim star Summer McIntosh reveals the secret behind her success in our exclusive chat. And the two-time world champion talks about her relationship with water.
Canadian teenager McIntosh breaks 400m free record - Taipei Times
Summer McIntosh returns to competition after world record-breaking performances at national trials
Swimming Ariarne Titmus world record video: Sam Short gold medal
McIntosh breaks Titmus' 400m freestyle world record
Summer McIntosh 400 Free LCM World Record Swim 3:56.08- Interview & Race
Summer McIntosh: 16-year-old super swimmer breaks two world records - BBC Newsround
Swimming sensation Summer McIntosh voted CP female athlete of the year
Katie Ledecky loses first 800m race since 2010 as Canadian teen phenom Summer McIntosh breaks through - The Athletic
O'Callaghan trumps Titmus, smashes 14-year-old record
McIntosh breaks Titmus 400m freestyle world record, The Courier
Swim star Ariarne Titmus questions big-stage credentials of rival Summer McIntosh
Summer McIntosh Schedule Madness: What Events Will She Race?
Summer McIntosh of Toronto wins silver at worlds