| Portchester to Grottaferrata | 905.28 mi (1,456.91 km) |
| Portchester to Grottaglie | 1,138.71 mi (1,832.58 km) |
| Portchester to Grottammare | 888.58 mi (1,430.04 km) |
| Portchester to Grugliasco | 565.97 mi (910.83 km) |
| Portchester to Grumo Appula | 1,087.95 mi (1,750.88 km) |
| Portchester to Grumo Nevano | 1,004.43 mi (1,616.48 km) |
| Portchester to Gualdo Tadino | 837.28 mi (1,347.48 km) |
| Portchester to Guardiagrele | 939.22 mi (1,511.53 km) |
| Portchester to Guastalla | 681.26 mi (1,096.39 km) |
| Portchester to Gubbio | 823.84 mi (1,325.84 km) |
| Portchester to Guspini | 912.61 mi (1,468.70 km) |
| Portchester to Gussago | 631.63 mi (1,016.52 km) |
| Portchester to Iesi | 840.43 mi (1,352.53 km) |
| Portchester to Iesolo | 730.85 mi (1,176.19 km) |
| Portchester to Iglesias | 923.40 mi (1,486.07 km) |
