| Harrow to Giovinazzo | 1,078.70 mi (1,736.00 km) |
| Harrow to Giugliano in Campania | 1,008.44 mi (1,622.92 km) |
| Harrow to Giulianova | 904.57 mi (1,455.76 km) |
| Harrow to Giussano | 595.66 mi (958.62 km) |
| Harrow to Goito | 666.99 mi (1,073.41 km) |
| Harrow to Gonzaga | 686.88 mi (1,105.43 km) |
| Harrow to Gorgonzola | 610.11 mi (981.88 km) |
| Harrow to Gorizia | 744.42 mi (1,198.04 km) |
| Harrow to Gragnano | 1,031.60 mi (1,660.21 km) |
| Harrow to Grammichele | 1,232.89 mi (1,984.15 km) |
| Harrow to Granarolo del l'Emilia | 728.35 mi (1,172.17 km) |
| Harrow to Gravina in Puglia | 1,088.85 mi (1,752.34 km) |
| Harrow to Grezzana | 666.41 mi (1,072.48 km) |
| Harrow to Gricignano d'Aversa | 1,004.35 mi (1,616.34 km) |
| Harrow to Grosseto | 810.58 mi (1,304.51 km) |
