| Dumbarton to Grottaferrata | 1,246.25 mi (2,005.64 km) |
| Dumbarton to Grottaglie | 1,457.02 mi (2,344.84 km) |
| Dumbarton to Grottammare | 1,211.81 mi (1,950.21 km) |
| Dumbarton to Grugliasco | 919.12 mi (1,479.19 km) |
| Dumbarton to Grumo Appula | 1,407.51 mi (2,265.17 km) |
| Dumbarton to Grumo Nevano | 1,340.64 mi (2,157.55 km) |
| Dumbarton to Gualdo Tadino | 1,166.37 mi (1,877.09 km) |
| Dumbarton to Guardiagrele | 1,266.60 mi (2,038.39 km) |
| Dumbarton to Guastalla | 1,010.72 mi (1,626.59 km) |
| Dumbarton to Gubbio | 1,153.51 mi (1,856.40 km) |
| Dumbarton to Guspini | 1,284.47 mi (2,067.15 km) |
| Dumbarton to Gussago | 957.75 mi (1,541.35 km) |
| Dumbarton to Iesi | 1,163.42 mi (1,872.35 km) |
| Dumbarton to Iesolo | 1,035.97 mi (1,667.23 km) |
| Dumbarton to Iglesias | 1,296.08 mi (2,085.83 km) |
