| Belfast to Grottaferrata | 1,224.37 mi (1,970.44 km) |
| Belfast to Grottaglie | 1,447.12 mi (2,328.92 km) |
| Belfast to Grottammare | 1,198.66 mi (1,929.05 km) |
| Belfast to Grugliasco | 889.09 mi (1,430.85 km) |
| Belfast to Grumo Appula | 1,396.86 mi (2,248.04 km) |
| Belfast to Grumo Nevano | 1,321.60 mi (2,126.91 km) |
| Belfast to Gualdo Tadino | 1,150.23 mi (1,851.12 km) |
| Belfast to Guardiagrele | 1,251.73 mi (2,014.46 km) |
| Belfast to Guastalla | 993.53 mi (1,598.93 km) |
| Belfast to Gubbio | 1,137.03 mi (1,829.88 km) |
| Belfast to Guspini | 1,240.76 mi (1,996.81 km) |
| Belfast to Gussago | 941.71 mi (1,515.53 km) |
| Belfast to Iesi | 1,150.13 mi (1,850.96 km) |
| Belfast to Iesolo | 1,029.50 mi (1,656.83 km) |
| Belfast to Iglesias | 1,251.47 mi (2,014.05 km) |
