| Gloucester to Giovinazzo | 1,157.09 mi (1,862.15 km) |
| Gloucester to Giugliano in Campania | 1,083.50 mi (1,743.73 km) |
| Gloucester to Giulianova | 982.16 mi (1,580.64 km) |
| Gloucester to Giussano | 672.21 mi (1,081.82 km) |
| Gloucester to Goito | 744.83 mi (1,198.68 km) |
| Gloucester to Gonzaga | 764.30 mi (1,230.02 km) |
| Gloucester to Gorgonzola | 686.57 mi (1,104.93 km) |
| Gloucester to Gorizia | 826.31 mi (1,329.81 km) |
| Gloucester to Gragnano | 1,106.76 mi (1,781.17 km) |
| Gloucester to Grammichele | 1,303.24 mi (2,097.36 km) |
| Gloucester to Granarolo del l'Emilia | 805.86 mi (1,296.91 km) |
| Gloucester to Gravina in Puglia | 1,166.52 mi (1,877.33 km) |
| Gloucester to Grezzana | 745.28 mi (1,199.41 km) |
| Gloucester to Gricignano d'Aversa | 1,079.50 mi (1,737.29 km) |
| Gloucester to Grosseto | 883.84 mi (1,422.41 km) |
