[6] In 1989, she began competing and won best child rider awards at every major horse show on the US east coast.

In 2001, at age 18, she won the United States Equestrian Team (USET)'s Talent Derby.

[11][12] In 2007, she won the WEF Challenge Cup and was a member of the winning USA teams in Hamina, Finland and Falsterbo, Sweden.

[19][20] In August 2014, she anchored the U.S. team victory at Furusiyya Nations Cup in Gijon, Spain, with a double clear performance.

[25] In 2016, she was the winner of the Royalton Farms Open Jumper 1.4m class at the Hampton Classic Horse Show.

[27] Also in 2016, she participated in the inaugural season of the Global Champions League, as a rider for and owner of Team Miami Glory.

[29][30] In 2019, Bloomberg promoted the Longines Global Champions Tour Finals, taking place in her hometown, New York City.

In the M40 to Grand Prix divisions, she has Paola 233, Lilli, Cessna 24, Crown 5, Calista, Quibelle, Manodie, Cliff Z and South Street.

[42] In 2016, the Humane Society of the United States recognized Bloomberg with the Compassion in Action Award "for her tireless work to protect all animals.