She was sired by Kodiac, a sprinter who won four minor races from twenty starts and finished second in the Hackwood Stakes and fourth in the Prix Maurice de Gheest.
[6] In June Campanelle was sent to England to contest the Group 2 Queen Mary Stakes at the Royal Ascot meeting which took place behind closed doors owing to the COVID-19 pandemic.
The 20/1 outsider Sardinia Sunset set the pace before giving way to Sacred but Campanelle gained the advantage inside the final furlong and "kept on well" to win by three quarters of a length.
[9] On 23 August at Deauville Racecourse in France Campanelle (racing without blinkers) was stepped up to Group 1 class and matched against male opponents in the Prix Morny over 1200 metres on soft ground.
Racing down the centre of the track, Campanelle led soon after the start and pulled clear in the closing stages to win by two lengths and a neck from Nando Parrado and Rhythm Master.
[10] Commenting on the fact that he would have to go into quarantine on his return to England, Dettori said "I've filled my car with wine, baguettes and cheese and I'm going to travel through the night, get my test tomorrow and lock myself in the house for a week" and added of the winner "She's got an amazing, long stride.
[11] For her final run of the year, Campanelle returned to the United States to contest the Grade I Breeders' Cup Juvenile Fillies Turf over one mile at Keeneland on 6 November.
Ridden by Dettori she tracked the front-running favourite Mother Pearl but was unable to make any progress in the straight and came home fourth of the fourteen runners.
[12] For her first race as a three-year-old, Campanelle returned to Ascot in June for the Commonwealth Cup over six furlongs on heavy ground and started the 5/1 third choice in the betting behind the French filly Suesa (Prix Texanita) and the colt Dragon Symbol (ridden by Oisin Murphy).
"[14] On 8 August Campanelle was matched against older horses in the Prix Maurice de Gheest over 1300 metres at Deauville Racecourse and started the 1.8/1 joint favourite.