| Helensburgh to Grottaferrata | 1,254.07 mi (2,018.23 km) |
| Helensburgh to Grottaglie | 1,464.93 mi (2,357.57 km) |
| Helensburgh to Grottammare | 1,219.70 mi (1,962.92 km) |
| Helensburgh to Grugliasco | 926.80 mi (1,491.54 km) |
| Helensburgh to Grumo Appula | 1,415.42 mi (2,277.89 km) |
| Helensburgh to Grumo Nevano | 1,348.49 mi (2,170.19 km) |
| Helensburgh to Gualdo Tadino | 1,174.24 mi (1,889.76 km) |
| Helensburgh to Guardiagrele | 1,274.48 mi (2,051.08 km) |
| Helensburgh to Guastalla | 1,018.57 mi (1,639.24 km) |
| Helensburgh to Gubbio | 1,161.38 mi (1,869.06 km) |
| Helensburgh to Guspini | 1,291.87 mi (2,079.06 km) |
| Helensburgh to Gussago | 965.62 mi (1,554.01 km) |
| Helensburgh to Iesi | 1,171.31 mi (1,885.05 km) |
| Helensburgh to Iesolo | 1,043.88 mi (1,679.96 km) |
| Helensburgh to Iglesias | 1,303.45 mi (2,097.70 km) |
