| Barreiro to Giovinazzo | 1,369.50 mi (2,203.99 km) |
| Barreiro to Giugliano in Campania | 1,241.00 mi (1,997.20 km) |
| Barreiro to Giulianova | 1,233.90 mi (1,985.76 km) |
| Barreiro to Giussano | 1,051.29 mi (1,691.89 km) |
| Barreiro to Goito | 1,107.45 mi (1,782.27 km) |
| Barreiro to Gonzaga | 1,108.51 mi (1,783.97 km) |
| Barreiro to Gorgonzola | 1,055.53 mi (1,698.71 km) |
| Barreiro to Gorizia | 1,257.60 mi (2,023.91 km) |
| Barreiro to Gragnano | 1,257.97 mi (2,024.50 km) |
| Barreiro to Grammichele | 1,291.88 mi (2,079.07 km) |
| Barreiro to Granarolo del l'Emilia | 1,131.38 mi (1,820.78 km) |
| Barreiro to Gravina in Puglia | 1,357.19 mi (2,184.18 km) |
| Barreiro to Grezzana | 1,129.19 mi (1,817.26 km) |
| Barreiro to Gricignano d'Aversa | 1,240.34 mi (1,996.14 km) |
| Barreiro to Grosseto | 1,090.48 mi (1,754.96 km) |
