In 2002, he relocated permanently to the U.K.[3] He was named as a reserve for the 2012 Summer Olympics in London, and a few days before the Games started, he was called into the team as one of the horses was injured, but due to a misunderstanding in the Brazilian Equestrian Federation (CBH – Confederacao Brasileira de Hipismo) his forms were never sent to the IOC (International Olympic Committee) which meant he wasn't allowed to compete.
[citation needed] In July 2015, Carlos Parro rode as one of the team members for the 2015 Pan American Games in Toronto, riding Calcourt Landline.
At the Games held in front of his home crowd in Rio de Janeiro, Brazil, he finished 7th in the team competition and 18th individually with the horse Summon Up The Blood.
In October 2022, Carlos won an individual and team gold medal at the South American Championship in Buenos Aires, Argentina riding Tullabeg Chinzano.
After scoring a 37.70 in their dressage test,[4] Paro was issued a Yellow card by the International Federation for Equestrian Sports (FEI) when pictures emerged showing him hyper-flexing Safira's neck, using a Rollkur position.