| Twickenham to Grottaferrata | 906.56 mi (1,458.97 km) |
| Twickenham to Grottaglie | 1,133.22 mi (1,823.74 km) |
| Twickenham to Grottammare | 883.73 mi (1,422.23 km) |
| Twickenham to Grugliasco | 571.10 mi (919.10 km) |
| Twickenham to Grumo Appula | 1,082.68 mi (1,742.41 km) |
| Twickenham to Grumo Nevano | 1,004.28 mi (1,616.23 km) |
| Twickenham to Gualdo Tadino | 834.12 mi (1,342.38 km) |
| Twickenham to Guardiagrele | 935.89 mi (1,506.17 km) |
| Twickenham to Guastalla | 677.43 mi (1,090.22 km) |
| Twickenham to Gubbio | 820.81 mi (1,320.97 km) |
| Twickenham to Guspini | 929.30 mi (1,495.56 km) |
| Twickenham to Gussago | 626.33 mi (1,007.97 km) |
| Twickenham to Iesi | 835.29 mi (1,344.28 km) |
| Twickenham to Iesolo | 719.78 mi (1,158.37 km) |
| Twickenham to Iglesias | 940.72 mi (1,513.95 km) |
