up to TKM Juniors, finishing fifth in the Super 1 championship. 2003 saw Calado contest pan-European series for the first time, driving a Gillard Parilla kart for the PDB Racing Team in the ICA Junior class. He finished runner-up to Nicholas Risitano in the European Championship, beating future Formula One drivers Sébastien Buemi and Jaime Alguersuari.

Calado moved to Tony Kart for