Norway's Olympic 1500m champion Jakob Ingebrigtsen lowered his personal best to 3min 27.95sec in winning at the Oslo Diamond League meeting ©Getty Images

Norway’s athletics superstars Jakob Ingebrigtsen and Karsten Warholm broke new boundaries in providing keenly-anticipated and wildly-applauded home wins to round off the Oslo Diamond League meeting in the Bislett Stadium.

Ingebrigtsen, the 22-year-old Olympic 1500 metres champion, had to run a European and meeting record of 3min 27.95sec, making him the sixth fastest on the all-time list, to hold off a field packed with the event’s best operators.

Warholm, the 400m hurdles Olympic champion and world record holder, had an easier time of it as he set a sparkling Diamond League and meeting record of 46.52sec, the fastest run so far this year as he finished more than a second clear of CJ Allen of the United States, who clocked a personal best of 47.58.

Ingebrigtsen, whose previous 1500m best was 3:28.32, thus became the first European to break 3:28.

He was followed home by Spain’s world bronze medallist Mohamed Katir in 3:28.89, and Yared Nuguse of the United States, whose world indoor mile of 3:47.38 in New York on February 11 was the second fastest in history, third in a United States record of 3:29.02 that improved his personal best by four seconds.

Kenya’s 2019 world champion Timothy Cheruiyot was fourth in 3:29.08 from Mario Garcia of Spain in a personal best of 3:29.18 in a race that was the deepest in history with eight athletes going sub-3:30.

For Warholm, who won the indoor world 400 metres title in Istanbul earlier this year, this was a far happier start to the outdoor season than that of 2022, where he pulled up after the first hurdle at the Rabat Diamond League meeting with a torn hamstring that undermined his hopes of retaining his world title.

Earlier in the evening the meeting had witnessed a stupendous struggle in the men’s 5,000m which Ethiopia’s Yomif Kejelcha won by a matter of thousandths of a second from Uganda’s Jacob Kiplimo as both clocked a personal best time of 12:41.73.

Only four men have ever run faster than that time, which was a meeting record and the fastest seen so far this year.

Kejelcha, 25, the 2019 world 10,000m silver medallist and his 22-year-old rival, who has won world and Olympic 10,000m bronze and took gold in the Commonwealth 5,000 and 10,000m last year, had to be separated by a photo-finish in one of the most gripping contests seen on this track.

Kejelcha’s compatriot Telahun Bekele was third in a personal best of 12:46.21.

 Femke Bol produced her latest statement of intent in a season where she hopes to earn the world 400m hurdles title in Budapest as she set meeting record of 52.30sec, the fastest recorded this season.

The Dutch athlete, who has sharpened up for her outdoor season by lowering the longstanding world indoor 400m record to 49.26m, is hurdling with a new stride pattern this year and the results so far are promising, although she still has a way to go to get into the territory of the athlete who beat her to gold in Oregon last year in a world record of 50.68, Sydney McLaughlin-Levrone of the United States.

At 19, Erriyon Knighton of the United States is maintaining a dizzying trajectory this season as he seeks to better the world bronze he won last year in Oregon making himself the youngest sprint medallist in the Championship’s history.

Having won at the Florence Diamond League meeting on June 2 in 19.89, Knighton – whose 19.49 clocking last year was the fourth fastest of all time until compatriot Noah Lyles won the world title in a national record of 19.31 – earned another Diamond League victory in 19.77, breaking Usain Bolt’s 2013 meeting record of 19.79.

Other meeting records were set in the women’s 100m, women’s 3,000m and women’s mile.

Marie-Josee Ta Lou of the Ivory Coast won the 100m in 10.75, the fastest run this season, with Anthonique Strachan of The Bahamas second in a personal best of 10.92 and Jamaica’s world 200m champion Shericka Jackson third in 10.98 - the same time as the fourth and fifth placed Britons, respectively Dina Asher-Smith and Daryll Neita.

Beatrice Chebet contributed a meeting record in winning the women’s 3,000m in a personal best of 8:25.01, with fellow Kenyan Lilian Rengeruk second in a personal best of 8:25.90 and Margaret Kipkemboi completing a clean sweep for Kenya in 8.26.14.

The women’s Dream Mile also produced a meeting record as Ethiopia’s Birch Haylom won in a world under-20 record of 4:17.13, the fastest recorded this year.

Yulimar Rojas had the unfamiliar experience of a narrow victory in the women’s triple jump as she ended the night with a mere four centimetres advantage.

Venezuela’s Olympic and world champion, who improved her world record last year to 15.74 metres, cleared 14.91m in her first round, but Cuba’s Leyanis Perez Hernandez came uncomfortably close with her opening effort of 14.87m, a personal best, and Ukraine’s Maryna Bekh-Romanchuk took third place with a final effort of 14.75m.

Rojas revealed afterwards that she had recently recovered from injury after suffering a fall two weeks ago, adding: "This win encourages me to keep working hard, because the level in the triple jump at the moment is increasing."

Mondo Duplantis, the world and Olympic men’s pole vault champion, also found himself seriously challenged in a competition where his failure to clear 5.91m until his second attempt sent him onwards to the 6.01m mark in second place on countback after Chris Nilsen of the United States, the world and Olympic silver medallist, had cleared it first time.

But that was as far as the challenge went as Nilsen failed to negotiate the next height of 6.01m and Duplantis, who raised his world record to 6.22m earlier this year, made it at the second attempt before having three unsuccessful attempts at 6.12m, one centimetre higher than the 2023 world best he set in Hengelo on June 4.

South Africa’s Rio 2016 champion and world record holder Wayde van Niekerk, moving towards his form of old after recovering from the serious knee injury he suffered in 2017, won the men’s 400m in 44.38 in what was his first Diamond League appearance for many years.

Zambia’s rising talent Muzala Samukonga, the Commonwealth champion who tops this year’s world list with 43.91, was second in 44.49.

Valarie Allman of the United States, who succeeded Sandra Perkovic as Olympic discus champion at Tokyo 2020, beat her again tonight, 66.18m to 65.26m, but both were surprisingly beaten by Jorinde van Klinken of The Netherlands, who threw 66.77m in the fifth round.

Greece’s Olympic men’s long jump champion Miltiadis Tentoglou also suffered a surprise defeat as he finished third on 8.21m as Switzerland’s former decathlete Simon Ehammer won with 8.32m ahead of Marquis Dendy of the United States, who had a best of 8.26m.

Canada’s Commonwealth champion Sarah Mitton, who missed a world bronze by one place last year on countback, won a hugely competitive women’s shot put event with a first-round effort of 19.54m, beating Maggie Ewen of the United States by two centimetres.

Jamaica’s Danniel Thomas-Dodd, world champion Chase Ealey and Portugal’s Auriol Dongmo occupied the next three places in that order after all had registered a best of 19.44m.