| Greenock to Giovinazzo | 1,403.22 mi (2,258.27 km) |
| Greenock to Giugliano in Campania | 1,344.34 mi (2,163.51 km) |
| Greenock to Giulianova | 1,233.61 mi (1,985.30 km) |
| Greenock to Giussano | 931.32 mi (1,498.81 km) |
| Greenock to Goito | 997.83 mi (1,605.85 km) |
| Greenock to Gonzaga | 1,018.85 mi (1,639.68 km) |
| Greenock to Gorgonzola | 945.84 mi (1,522.18 km) |
| Greenock to Gorizia | 1,052.16 mi (1,693.29 km) |
| Greenock to Gragnano | 1,367.14 mi (2,200.21 km) |
| Greenock to Grammichele | 1,577.08 mi (2,538.06 km) |
| Greenock to Granarolo del l'Emilia | 1,059.51 mi (1,705.12 km) |
| Greenock to Gravina in Puglia | 1,416.18 mi (2,279.13 km) |
| Greenock to Grezzana | 993.44 mi (1,598.79 km) |
| Greenock to Gricignano d'Aversa | 1,340.05 mi (2,156.60 km) |
| Greenock to Grosseto | 1,151.58 mi (1,853.28 km) |
