Timothy Cheruiyot, Hellen Obiri and Faith Kipyegon won their respective races at the Monaco Diamond League meeting held on Friday night in France.
World champion Obiri took a comfortable win in the 5,000m clocking 14 minutes, 22.12 seconds as rival Sifan Hassan and compatriot Winny Chebet failed to finish the race.
Beatrice Chepkoech finished 6th while Britain’s Laura Weightman clocked her personal best finishing third.
Timothy Cheruiyot clocked 3 minutes, 28.45 seconds to win the 1500 metres ahead of Jakob Ingebrigtsen of Norway and Jake Wightman of Great Britain who settled for second and third respectively.
Another Kenyan Faith Kipyegon had an easy stroll to victory in the 1000 metres in a time of 2 minutes, 29.15 seconds. Laura Muir of Great Britain finished second while Ciara Mageean settled for the bronze position.
Uganda’s Joshua Cheptegei produced an astonishing run in Monaco to break the 16-year-old 5,000m world record by almost two seconds.
The 23-year-old, who won the 10,000m world title in Doha last year, came home in 12 minutes 35.36 seconds, breaking the previous mark, set by Ethiopian great Kenenisa Bekele of 12 minutes, 37.35 seconds.
A limit of 5,000 socially-distanced spectators were allowed into the stadium to witness the season opening event.