[4] On 27 May, still 16 years old, Ingebrigtsen became the youngest athlete in history to run the one-mile distance in less than 4 minutes, when he finished in 11th place in a Diamond League race at Hayward Field in Eugene, US.

[5] On 15 June, he ran almost two seconds faster, when he won a mile run with a time of 3:56.29 at the Bislett Games in Oslo, Norway.

[6] On 8 July, in his first attempt at the distance, he beat the European Under-20 record in the 3000 metres steeplechase at the Guldensporenmeeting in Kortrijk, Belgium with a time of 8:26.81.

[10] On 19 October, Ingebrigtsen broke Sondre Nordstad Moen’s Norwegian 10 km record at the Hytteplanmila in Hole, Norway, winning the race in 27:54.

[11] On 14 August, at the Herculis meeting in Monaco, Ingebrigtsen broke the 3:30 barrier in the 1500 m for the first time, running 3:28.68, which was under Mo Farah's 7-year-old European record of 3:28.81.

[20] On 17 February 2022, Ingebrigtsen set his first senior world record, clocking 3:30.60 for the indoor 1500 m at the Meeting Hauts-de-France Pas-de-Calais in Liévin.

[23] In March at the European Indoor Championships held in Istanbul, Ingebrigtsen secured the 1500 m/3000 m 'double-double', winning both events for the second time.

[26] On 15 June, Ingebrigtsen improved his own European record in the 1500 metres at the Bislett Games, breaking the 3:28 barrier for the first time by running 3:27.95.

The Norwegian ended his season with victories in the mile and 3000m at the Prefontaine Classic in Eugene, Oregon, which also served as the Diamond League final.

[35] In fall of 2023, post-track season, Ingebrigtsen suffered an injury around the sacrum region, causing him, for the first time in seven years, to not defend his continental title at the European Cross Country Championships.

Instead, he focused on preparation & training, for both the 2024 European Championships in Rome and the 2024 Summer Olympic Games in Paris, held in June and August, respectively.

[39][40] Ingebrigtsen won the 1500m race at the 2024 Oslo Diamond League meet in a time of 3:29.74, edging out Timothy Cheruiyot by three hundredths of a second.

[42] On 12 July 2024, in the final weeks before the 2024 Olympic Games, Ingebrigtsen improved his European record in the 1500 metres to 3:26.73 at Monaco's Herculis Meeting,[43] becoming the fourth man in history to break the 3:27 barrier.

Only Asbel Kiprop, Bernard Lagat, and Hicham El Guerrouj have run faster than Ingebrigtsen's mark in the metric mile.

The other two men, Hicham El Guerrouj and Paavo Nurmi, achieved this feat in the same Olympic Games, in Athens 2004 and Paris 1924 respectively.

In addition to Nuguse & Ingebrigtsen, the race featured the other two Olympic medalists, Cole Hocker and Josh Kerr, who finished third and fifth respectively.

[65] In his first race of the year on 13 February, Ingebrigtsen broke Yared Nuguse's world record of 3:46.63 in the indoor mile, running 3:45.14 in Liévin.

Ingebrigtsen split 3:29.63 for 1500 metres en route to the mile, thus breaking his previous short track world record of 3:30.60 in this event by almost a second and becoming the first man to ever run sub-3:30 in the indoor 1500m.

[68] In March 2024, a representative for Amazon Prime confirmed the development of a new show whose plot follows Jakob and his brothers in the lead up to the 2024 Olympics in Paris.

[71] In October 2023, Jakob, Filip, and Henrik Ingebrigtsen released a statement accusing their father and former coach Gjert of "aggression, control, and physical violence", also saying that he "took the joy out of the sport they once loved".

[77][78] In late July 2024, with the goal of getting Norwegians excited and confident in their athletes for the 2024 Summer Olympics, Jakob, Filip, and Henrik Ingebrigtsen released a pop song known as Ingen gjør det bedre (Nobody Does It Better) under the handle The IngebritZ.