| Castelo Branco to Grottaferrata | 1,061.28 mi (1,707.96 km) |
| Castelo Branco to Grottaglie | 1,312.84 mi (2,112.80 km) |
| Castelo Branco to Grottammare | 1,125.54 mi (1,811.39 km) |
| Castelo Branco to Grugliasco | 848.32 mi (1,365.24 km) |
| Castelo Branco to Grumo Appula | 1,271.64 mi (2,046.50 km) |
| Castelo Branco to Grumo Nevano | 1,145.36 mi (1,843.28 km) |
| Castelo Branco to Gualdo Tadino | 1,072.57 mi (1,726.13 km) |
| Castelo Branco to Guardiagrele | 1,141.02 mi (1,836.29 km) |
| Castelo Branco to Guastalla | 989.43 mi (1,592.33 km) |
| Castelo Branco to Gubbio | 1,062.59 mi (1,710.08 km) |
| Castelo Branco to Guspini | 857.02 mi (1,379.25 km) |
| Castelo Branco to Gussago | 978.43 mi (1,574.62 km) |
| Castelo Branco to Iesi | 1,097.46 mi (1,766.19 km) |
| Castelo Branco to Iesolo | 1,093.21 mi (1,759.36 km) |
| Castelo Branco to Iglesias | 853.54 mi (1,373.63 km) |
