| Watford to Giovinazzo | 1,083.27 mi (1,743.35 km) |
| Watford to Giugliano in Campania | 1,013.28 mi (1,630.71 km) |
| Watford to Giulianova | 909.22 mi (1,463.24 km) |
| Watford to Giussano | 600.42 mi (966.29 km) |
| Watford to Goito | 671.64 mi (1,080.89 km) |
| Watford to Gonzaga | 691.57 mi (1,112.97 km) |
| Watford to Gorgonzola | 614.88 mi (989.56 km) |
| Watford to Gorizia | 748.50 mi (1,204.60 km) |
| Watford to Gragnano | 1,036.44 mi (1,667.99 km) |
| Watford to Grammichele | 1,237.97 mi (1,992.32 km) |
| Watford to Granarolo del l'Emilia | 733.02 mi (1,179.69 km) |
| Watford to Gravina in Puglia | 1,093.49 mi (1,759.80 km) |
| Watford to Grezzana | 670.95 mi (1,079.79 km) |
| Watford to Gricignano d'Aversa | 1,009.18 mi (1,624.12 km) |
| Watford to Grosseto | 815.54 mi (1,312.49 km) |
