| Piraeus to Giugliano in Campania | 544.61 mi (876.46 km) |
| Piraeus to Giulianova | 608.53 mi (979.33 km) |
| Piraeus to Giussano | 913.86 mi (1,470.72 km) |
| Piraeus to Goito | 837.75 mi (1,348.22 km) |
| Piraeus to Gonzaga | 820.53 mi (1,320.52 km) |
| Piraeus to Gorgonzola | 900.37 mi (1,449.00 km) |
| Piraeus to Gorizia | 754.16 mi (1,213.71 km) |
| Piraeus to Gragnano | 523.52 mi (842.53 km) |
| Piraeus to Grammichele | 495.75 mi (797.84 km) |
| Piraeus to Granarolo del l'Emilia | 779.58 mi (1,254.61 km) |
| Piraeus to Gravina in Puglia | 433.99 mi (698.45 km) |
| Piraeus to Grezzana | 833.74 mi (1,341.77 km) |
| Piraeus to Gricignano d'Aversa | 546.78 mi (879.96 km) |
| Piraeus to Grosseto | 738.89 mi (1,189.13 km) |
| Piraeus to Grottaferrata | 639.17 mi (1,028.65 km) |
