The wheelchair men's and women's competitions were won by Marcel Hug and Madison de Rozario in course record times of 1:23:44 and 1:38:51 respectively.

[10] After winding through Canary Wharf, the route returned through Shadwell on the other side of the road to which it entered before passing through Tower Hill.

[13][10] The course then ran parallel to St James's Park before turning onto The Mall and finishing in front of Buckingham Palace.

[13][10] The elite men's race featured four of the fastest five competitors in history: Kenenisa Bekele, Kelvin Kiptum, Birhanu Legese and Mosinet Geremew.

[19] Competitors included world record holder Brigid Kosgei, 2020 Summer Olympics champion Peres Jepchirchir and 2022 winner Yalemzerf Yehualaw.

[22] On 21 April, Briton Eilish McColgan withdrew due to a knee injury; she had been scheduled to make her marathon debut at the event.

Other competitors included Daniel Romanchuk, who came second in 2022, and eight-time former winner David Weir in his 24th consecutive London Marathon.

[25][26] The elite and wheelchair races were run in mostly dry conditions, whilst there was heavy rain at times during the mass participation event.

[28] Marathon debutante Emile Cairess was the top British finisher in sixth place;[30] his time of 2:08:07 made him the third fastest Briton in history.

[28] After an hour of racing, Hassan pulled up with an apparent leg injury, and she was eleven seconds behind the leading pack at half distance.

[33] Hassan caught the leading pack of Sheila Chepkirui, Peres Jepchirchir, Judith Korir and Yalemzerf Yehualaw after 30 kilometres (19 mi).

[35] A mini-marathon took place on 22 April, and was started by Jake Wightman, who won the 1,500 metres event at the 2022 World Athletics Championships.

[37] The events were run over distances of 1 mile (1.6 km) and 2.6 kilometres (1.6 mi), and over 8,000 children ran, the most competitors at any London mini-marathon.

[41] Former sportspeople who competed in the marathon event included former Olympic curler Eve Muirhead and former England rugby union captain Chris Robshaw.

[18] Other celebrity competitors included presenters Chris Evans[6] and Adele Roberts,[18] Harry Judd from the band McFly,[6] Marcus Mumford of Mumford & Sons[18] actor Josh O'Connor[26] and 10 then current Members of Parliament,[6] including Chancellor of the Exchequer Jeremy Hunt.