| Opatija to Giugliano in Campania | 304.15 mi (489.49 km) |
| Opatija to Giulianova | 179.33 mi (288.61 km) |
| Opatija to Giussano | 247.36 mi (398.09 km) |
| Opatija to Goito | 176.68 mi (284.34 km) |
| Opatija to Gonzaga | 171.80 mi (276.48 km) |
| Opatija to Gorgonzola | 237.94 mi (382.93 km) |
| Opatija to Gorizia | 52.99 mi (85.29 km) |
| Opatija to Gragnano | 320.61 mi (515.97 km) |
| Opatija to Grammichele | 561.21 mi (903.18 km) |
| Opatija to Granarolo del l'Emilia | 149.51 mi (240.61 km) |
| Opatija to Gravina in Puglia | 329.81 mi (530.78 km) |
| Opatija to Grezzana | 159.71 mi (257.03 km) |
| Opatija to Gricignano d'Aversa | 299.46 mi (481.93 km) |
| Opatija to Grosseto | 238.08 mi (383.15 km) |
| Opatija to Grottaferrata | 258.13 mi (415.42 km) |
