He broke a 24-year fast without Brazil winning medals in this event at the Pan American Games, since Marcelo Palma's bronze in 1991.

Bonfim repeated the position of Sérgio Galdino from Santa Catarina at the World Championship in Stuttgart (Germany), in 1993.

[12] At the 2019 Pan American Games held in Lima, he won the silver medal in the 20 km walk, just 7 seconds behind Ecuadorian Brian Daniel Alvez.

With this, he was chosen as the male flag bearer for Team Brazil at the Closing Ceremony of the South American Games.

During the 20 km, he took the lead a few times, alternating with David Hurtado, who finished in front with 1:19.20 and broke the Pan American Games record.