Ciara Mageean's Dream Mile at the Diamond League meeting in Oslo proved anything but, with the Portaferry athlete trailing home in a disappointing 11th place in four minutes 22.03 seconds as Birke Haylom of Ethiopia set an Under-20 world record and broke Sonia O'Sullivan’s meeting record.
Mageean became outpaced on the penultimate lap but stayed on in the closing stages to finish ahead of three of her rivals.
The 31-year-old came into the race in a rich vein of form having set a new Irish 800m record at the British Milers Club event in Manchester at the end of May, as well as clocking 4:00.95 when fourth in the 1500m at the Florence Diamond League meeting earlier this month.
Seventeen-year-old Haylom delivered a confident display of front running in the rarely-raced women’s mile as she broke clear halfway through the third lap and held on to win in 4:17.13.
Elsewhere at Bislett Stadium, Karsten Warholm and Jakob Ingebrigtsen delivered stunning performances in front of their adoring fans, winning the 400m hurdles and 1500m in spectacular times.
Warholm, who set the world record of 45.94 seconds at the Tokyo Olympics, was running his first race of the season but destroyed the field and, even with a slight stutter off the final barrier, came home in 46.52, the fourth fastest time in history.
"When you're on the track, you're in the bubble but I really felt the crowd lift me in the home straight - the adrenaline was really pumping in the last 100m," Warholm said.
"It was a race I will always remember - I felt really good today and knew something special was coming.
"Today shows in the right circumstances, I can really attack the world record, maybe even this year. It really sucked to be out injured last year and I wanted to make sure I came back with a big boom."
Ingebrigtsen, who set an all-time world best over two miles last week in Paris, was back on more familiar ground with the 1500m and ran his trademark race, controlled from the front, to come home in 3:27.95 – moving up to sixth in the all-time list with another European record.
The first eight finishers all broke 3.30 – six of them with personal bests – and third-placed Yared Nuguse set an American record of 3:29.02.
"The race went as expected, running by myself as usual, and the crowd was amazing, it was an incredible experience" Ingebrigtsen said. "I 100% have more left in me. It's all about consistency in all of the races."
The crowd loved it, and also appreciated a brilliant men's 5,000m that came down to a photo finish as Yomif Kejelcha of Ethiopia and Ugandan Jacob Kiplimo both clocked 12.41.73 – the fifth-fastest of all time.
Kiplimo patiently sat on his rival’s shoulder until the final bend but after he surged ahead, Kejelcha responded as the fans roared them home. They both dipped for the line like sprinters and Kejelcha was given the decision by less than a hundredth of a second.
At the other end of the distance scale, Marie-Josee Ta Lou continued to fly the flag for the "older" sprinters as the 34-year-old Ivorian scorched to a world-lead 10.75 seconds in the women’s 100m – beating Marion Jones’s meeting record of 10.82 that had stood for 25 years.
Erriyon Knighton roared off the bend and piled it on in the final 50m for a hugely impressive time of 19.77 to win the men’s 200m and secure a hat-trick of victories on his European tour.
South Africa’s former world and Olympic champion Wayde van Niekerk made a winning return to the circuit after years of injury problems, setting off strongly and holding on to win the 400m in 44.38 seconds – the 30-year-old's first Diamond League victory in six years.
