| Harrow Weald to Grottaferrata | 913.87 mi (1,470.73 km) |
| Harrow Weald to Grottaglie | 1,139.43 mi (1,833.74 km) |
| Harrow Weald to Grottammare | 890.11 mi (1,432.50 km) |
| Harrow Weald to Grugliasco | 579.09 mi (931.96 km) |
| Harrow Weald to Grumo Appula | 1,088.94 mi (1,752.48 km) |
| Harrow Weald to Grumo Nevano | 1,011.35 mi (1,627.61 km) |
| Harrow Weald to Gualdo Tadino | 840.78 mi (1,353.11 km) |
| Harrow Weald to Guardiagrele | 942.49 mi (1,516.80 km) |
| Harrow Weald to Guastalla | 684.07 mi (1,100.90 km) |
| Harrow Weald to Gubbio | 827.50 mi (1,331.74 km) |
| Harrow Weald to Guspini | 938.52 mi (1,510.41 km) |
| Harrow Weald to Gussago | 632.76 mi (1,018.33 km) |
| Harrow Weald to Iesi | 841.65 mi (1,354.50 km) |
| Harrow Weald to Iesolo | 725.18 mi (1,167.07 km) |
| Harrow Weald to Iglesias | 950.01 mi (1,528.90 km) |
