| Mainz to Giugliano in Campania | 687.70 mi (1,106.75 km) |
| Mainz to Giulianova | 568.10 mi (914.28 km) |
| Mainz to Giussano | 299.20 mi (481.52 km) |
| Mainz to Goito | 345.57 mi (556.13 km) |
| Mainz to Gonzaga | 367.54 mi (591.50 km) |
| Mainz to Gorgonzola | 311.93 mi (502.00 km) |
| Mainz to Gorizia | 373.41 mi (600.95 km) |
| Mainz to Gragnano | 709.24 mi (1,141.41 km) |
| Mainz to Grammichele | 937.17 mi (1,508.22 km) |
| Mainz to Granarolo del l'Emilia | 403.89 mi (650.00 km) |
| Mainz to Gravina in Puglia | 745.63 mi (1,199.98 km) |
| Mainz to Grezzana | 333.95 mi (537.44 km) |
| Mainz to Gricignano d'Aversa | 683.11 mi (1,099.37 km) |
| Mainz to Grosseto | 516.49 mi (831.20 km) |
| Mainz to Grottaferrata | 604.28 mi (972.50 km) |
