| Alton to Grottaferrata | 913.85 mi (1,470.70 km) |
| Alton to Grottaglie | 1,144.74 mi (1,842.28 km) |
| Alton to Grottammare | 894.78 mi (1,440.01 km) |
| Alton to Grugliasco | 575.74 mi (926.57 km) |
| Alton to Grumo Appula | 1,094.05 mi (1,760.70 km) |
| Alton to Grumo Nevano | 1,012.49 mi (1,629.45 km) |
| Alton to Gualdo Tadino | 844.11 mi (1,358.47 km) |
| Alton to Guardiagrele | 946.03 mi (1,522.49 km) |
| Alton to Guastalla | 687.74 mi (1,106.81 km) |
| Alton to Gubbio | 830.71 mi (1,336.90 km) |
| Alton to Guspini | 926.67 mi (1,491.33 km) |
| Alton to Gussago | 637.49 mi (1,025.93 km) |
| Alton to Iesi | 846.49 mi (1,362.29 km) |
| Alton to Iesolo | 734.46 mi (1,182.00 km) |
| Alton to Iglesias | 937.68 mi (1,509.05 km) |
