| Romanshorn to Grottaferrata | 430.89 mi (693.44 km) |
| Romanshorn to Grottaglie | 629.23 mi (1,012.65 km) |
| Romanshorn to Grottammare | 384.47 mi (618.75 km) |
| Romanshorn to Grugliasco | 192.17 mi (309.27 km) |
| Romanshorn to Grumo Appula | 579.55 mi (932.70 km) |
| Romanshorn to Grumo Nevano | 518.31 mi (834.14 km) |
| Romanshorn to Gualdo Tadino | 342.19 mi (550.71 km) |
| Romanshorn to Guardiagrele | 440.19 mi (708.42 km) |
| Romanshorn to Guastalla | 193.29 mi (311.07 km) |
| Romanshorn to Gubbio | 330.02 mi (531.12 km) |
| Romanshorn to Guspini | 556.01 mi (894.81 km) |
| Romanshorn to Gussago | 140.80 mi (226.60 km) |
| Romanshorn to Iesi | 336.38 mi (541.35 km) |
| Romanshorn to Iesolo | 209.96 mi (337.90 km) |
| Romanshorn to Iglesias | 571.28 mi (919.39 km) |
