[7] At the age of 19, she won the silver medal at the 2020 Tokyo Olympics, breaking the British record set by Kelly Holmes in 1995.

[9] Her mother Rachel trained for a time with Leigh Harriers while her father Dean had run in the London Marathon in the past.

[15] Hodgkinson joined Leigh Harriers at the age of nine, but initially swam with Howe Bridge Aces before devoting herself fully to running.

Competing among 70 finalists at the British Schools Modern Biathlon Championships in London, Hodgkinson finished second in the 500 metres run with a personal best (1:34.28) and also swam 50 m with a new best as well for an overall eighth place.

[18] Her father ecouraged her to focus on athletics, and she was inspired by British heptathlete Jessica Ennis-Hill winning the gold medal at the 2012 London Olympics.

[5][30] Named by Wigan Borough Council Sports Achiever of the Year, her season's best ranked her, at the time, fifth on the British U17 female all-time list (2:04.26).

Despite this and competing against athletes up to two years her senior, she placed second at the England U20s and earned bronze at the European U20 Championships in Borås, Sweden, setting a new personal best.

At the end of August, she debuted outdoors at international senior level in Gothenburg, Sweden, finishing with a new PB behind only the 2019 world silver medallist Raevyn Rogers.

[47][48][49] A week later, she set a British U23 record by lowering her PB to 1:57.51 when finishing fourth at the Stockholm Diamond League meet.

Before the delayed 2020 Tokyo Olympic Games in August she ranked eighth on the season's top list and fifth among women entered.

[66] She then continued competition in the Diamond Race, winning in Eugene behind the pond, Oslo, and coming home second behind Kenya's Mary Moraa in Stockholm.

[5] Ahead of the World Athletics Championships in Eugene, first year seniors Mu and Hodgkinson looked favourites, though the latter was fourth on the season's outdoor top list.

[70] The same August, she responded to the setbacks and secured her first major senior outdoor gold, winning convincingly her two-lap event at the European Championships held in Munich.

[71][72] Concluding this busy athletics year she struggled to maintain her form, and had to settle for fifth at the Zürich Diamond League final in September.

Having been appointed UK team co-captain at the European U23 Championships held in Espoo, Finland, where she competed in the 400 m, Hodgkinson went on to secure bronze, clocking a new PB again (51.76).

[87][5] Later she missed the sold-out, with over 50,000 native crowd, London Diamond League, would be her debut at the Olympic Stadium, due to an illness.

[88] At the World Championships held that year in Budapest, the "Big Three" grabbed all the medals again in one of the event's most highly anticipated showdowns.

Though she beat Moraa, the race was narrowly won, however, in turn by Mu who competed as an ineligible national wild card and set a US record (1:54.97).

Hodgkinson opened her 2024 season by running a 400 metres personal best of 51.61 s at a meeting in Citta di Savona, Italy, on 15 May finishing second behind Ireland's Sharlene Mawdsley.

[93] In June, Hodgkinson competed at the European Championships in Rome, Italy, holding off Gabriela Gajanová to retain the title she had won two years previously.

[94] At the Diamond League meeting in London on 20 July, Hodgkinson set a new British 800 m record of 1:54:61 to become the sixth fastest woman in history over the distance.

[95][96][97] On 7 July, Hodgkinson won again at the FBK Games in Hengelo, pulling away from Prudence Sekgodiso on the final bend to secure the victory in a time of 1:57.36.

[102][103] On 13 February, Hodgkinson intended to attempt to break Jolanda Ceplak's 23-year-old indoor 800 m world record at the Keely Klassic, a new meet named after her.