"[7] Within a year, a race by Oleksiak at the University of Toronto drew the attention of coach Ben Titley, who would go on to lead Canada's Olympic team.

[9] Extra investments came as the data analytics division of Canadian Tire appointed Oleksiak, whose top FINA ranking at the time was 319th, as a possible Olympic medallist in the 2020 Summer Games.

[10] First indications of great potential for Oleksiak were identified when, six weeks after fracturing her elbow in a cycling accident, she was still able to win six medals at the 2015 FINA World Junior Swimming Championships.

Oleksiak also set the Canadian and World Junior records in the 100 m butterfly en route to the Olympics in that event.

[11] Before the Olympics, Oleksiak had risen to 49th in the 100-metre freestyle rankings and 37th in the 100-metre butterfly, and the Canadian Tire analysts appointed her to possibly win a medal in Rio.

Oleksiak also anchored the final leg of the women's 4×100 m freestyle relay team with Taylor Ruck, Chantal van Landeghem, Sandrine Mainville, and Michelle Williams with the latter only swimming in the heat.

Oleksiak started out fast, touching the halfway wall in third before finishing characteristically strong in second place, winning the silver medal.

With the win, she exclaimed that "I'm just happy that I made Canada proud and getting to look up into the stands and find my parents, it's just amazing for me and it's such a great feeling.

[15][16] On day six, Oleksiak was seventh at the 50-metre turn of the 100 m freestyle, and eventually surged for a gold medal finish, tied with Simone Manuel and setting an Olympic record of 52.70.

[18][19] Day eight marked Oleksiak's fifth Olympic race and the only one she did not medal in that edition, being the butterfly swimmer of the 4 × 100 m medley relay that finished in fifth place.

As the event was her first international competition following the Olympics, in front of her own crowd, Oleksiak was the centre of attentions of fans and media.

[31] Oleksiak had troubles with a shoulder injury for most of the year before suffering a concussion when she was hit in the head with a medicine ball in the gym.

[32] Despite this she had more success at the Team Canada trials one month later, winning the 100m freestyle and butterfly races and earning spots for both in the 2017 World Aquatics Championships.

They won the bronze medal and set a new national record in the process, with Oleksiak's 52.26 time being the second-fastest in the freestyle segment of the race.

"[59] Ben Titley, longtime coach of Canada's high performance program, unexpectedly left his post before the start of the 2022 season.

Oleksiak, who had worked with Titley for most of the preceding ten years, acknowledged the change was "different" now, but said she had "a lot of faith and trust" in new head coach Ryan Mallette.

[69] She then recorded a personal best split time of 52.11 swimming the anchor leg in the 4×100 m mixed freestyle relay, taking the third-place Canadian team into the silver medal position in the final stretch.

This was Oleksiak's eighth World medal, tying Ryan Cochrane as the most-decorated Canadian swimmer at those championships.

[71] On her success, noting that all her medals were in relay events, Oleksiak said it was "obvious at this point I wouldn't be here without the team, so it feels weird to claim that title on my own.

"[72] Oleksiak announced that she would not compete at the 2022 Commonwealth Games, citing the compression of the international swimming calendar as a result of the pandemic.

She immediately underwent knee surgery at Women's College Hospital in Toronto to repair it, and stated that the recovery process was "probably about to be the longest and most tentative" of her career.

[74] Oleksiak did not attend the national swim trials while continuing to rehabilitate her knee, but was nevertheless provisionally named to the Canadian delegation for the 2023 World Aquatics Championships.

[77] On September 12, it was announced that Oleksiak had moved to train under coach Jeff Julian in Mission Viejo, California.

[79] Following knee surgery recovery, Oleksiak made her return to competition at the inaugural edition of the Canadian Swimming Open.

In advance of the event, she said that her recent experiences and new training environment had revived her love for swimming, and she now envisioned competing through to the 2028 Summer Olympics in Los Angeles: "I'm really happy with where I'm at right now and what I'm trying to do is going to be transcending the sport.

"[79] In her first event at the Open, Oleksiak posted a 1:59.75 time in the final of the 200 m freestyle, which said "felt pretty good," adding "I just wanted to be under two minutes and I did it.

"[80] The national Olympic swimming trials began with disappointment for Oleksiak, who finished ninth in the 200 m freestyle final and missed qualification for the event.

[84] At the 2024 Summer Olympics, Oleksiak began by participating in both the heats and the final of the 4×100 m freestyle relay, where the Canadian team finished fourth.

[85] She swam the freestyle leg in the heats of the 4×100 m medley relay, helping Canada qualify to the final in second position.