Chapur began his racing career in 2010 in the minor division (Clase 2) of Turismo Nacional (TN) championship. He won the Clase 2 title in 2012,[2] before moving up to Clase 3 and becoming champion in his rookie season.[1][3]
As a factory driver for Peugeot Argentina, Chapur won his second title in TN Clase 3 in 2015.[4] He also competed in Super TC2000.[1]
In 2018 and 2019 Chapur was a driver for Citroën Argentina.[5][6] In 2018, he was runner-up in TN Clase 3 and fifth in Super TC2000 championship.[1] In 2019 and 2020, Chapur was third in TN Clase 3 with MG-C Pergamino team.