| Castalla to Noventa Vicentina | 777.60 mi (1,251.43 km) |
| Castalla to Novi di Modena | 737.15 mi (1,186.33 km) |
| Castalla to Novi Ligure | 646.86 mi (1,041.02 km) |
| Castalla to Nuoro | 546.44 mi (879.40 km) |
| Castalla to Occhiobello | 766.60 mi (1,233.73 km) |
| Castalla to Oderzo | 835.20 mi (1,344.12 km) |
| Castalla to Oggiono | 712.90 mi (1,147.29 km) |
| Castalla to Olbia | 563.13 mi (906.27 km) |
| Castalla to Oleggio | 678.57 mi (1,092.06 km) |
| Castalla to Olgiate Comasco | 699.00 mi (1,124.94 km) |
| Castalla to Olgiate Olona | 689.11 mi (1,109.01 km) |
| Castalla to Omegna | 683.76 mi (1,100.40 km) |
| Castalla to Opera | 690.20 mi (1,110.77 km) |
| Castalla to Oppeano | 763.90 mi (1,229.38 km) |
| Castalla to Orbassano | 611.66 mi (984.37 km) |
