One year later, she became a swimmer for Clube Náutico Capibaribe, where she competed alongside future Olympian Joanna Maranhão.

Just one year after changing to modern pentathlon, with França as part of her coaching staff, Marques was Brazilian and South American champion.

[2][3] The gold medal in the 2007 Pan American Games, held in Rio de Janeiro, qualified Marques for her Olympian debut at the 2008 Summer Olympics, where she finished 18th overall.

[4] The following year, Marques joined the Brazilian Army to gain the scholarship and training facilities reserved for military sportspeople.

[1] Marques was chosen through popular vote to be the flagbearer of Brazil for the opening ceremony of the 2016 Summer Olympics, which the country would host in Rio de Janeiro.