| Castalla to Grottaferrata | 737.02 mi (1,186.11 km) |
| Castalla to Grottaglie | 971.78 mi (1,563.93 km) |
| Castalla to Grottammare | 817.36 mi (1,315.41 km) |
| Castalla to Grugliasco | 615.99 mi (991.34 km) |
| Castalla to Grumo Appula | 935.41 mi (1,505.39 km) |
| Castalla to Grumo Nevano | 808.52 mi (1,301.19 km) |
| Castalla to Gualdo Tadino | 770.87 mi (1,240.60 km) |
| Castalla to Guardiagrele | 820.69 mi (1,320.78 km) |
| Castalla to Guastalla | 728.35 mi (1,172.16 km) |
| Castalla to Gubbio | 763.49 mi (1,228.72 km) |
| Castalla to Guspini | 503.07 mi (809.62 km) |
| Castalla to Gussago | 734.95 mi (1,182.79 km) |
| Castalla to Iesi | 799.29 mi (1,286.34 km) |
| Castalla to Iesolo | 832.64 mi (1,340.00 km) |
| Castalla to Iglesias | 496.80 mi (799.52 km) |
