| Castellabate to Oria | 141.88 mi (228.34 km) |
| Castellabate to Oristano | 337.15 mi (542.59 km) |
| Castellabate to Orta Nova | 82.80 mi (133.26 km) |
| Castellabate to Orte | 201.05 mi (323.56 km) |
| Castellabate to Ortona | 145.95 mi (234.88 km) |
| Castellabate to Orvieto | 223.68 mi (359.98 km) |
| Castellabate to Orzinuovi | 435.54 mi (700.94 km) |
| Castellabate to Osimo | 233.94 mi (376.49 km) |
| Castellabate to Ospitaletto | 440.11 mi (708.29 km) |
| Castellabate to Ostuni | 141.71 mi (228.05 km) |
| Castellabate to Ottaviano | 46.68 mi (75.13 km) |
| Castellabate to Ovada | 440.32 mi (708.62 km) |
| Castellabate to Ozieri | 313.55 mi (504.61 km) |
| Castellabate to Paceco | 204.29 mi (328.77 km) |
| Castellabate to Pachino | 246.25 mi (396.31 km) |
