| Castellammare di Stabia to Opwijk | 863.92 mi (1,390.35 km) |
| Castellammare di Stabia to Ostend | 913.00 mi (1,469.34 km) |
| Castellammare di Stabia to Oud-Heverlee | 843.65 mi (1,357.72 km) |
| Castellammare di Stabia to Oud-Turnhout | 862.32 mi (1,387.77 km) |
| Castellammare di Stabia to Oudenaarde | 873.99 mi (1,406.55 km) |
| Castellammare di Stabia to Oudenburg | 908.49 mi (1,462.08 km) |
| Castellammare di Stabia to Oupeye | 811.43 mi (1,305.88 km) |
| Castellammare di Stabia to Overijse | 844.51 mi (1,359.10 km) |
| Castellammare di Stabia to Overpelt | 845.95 mi (1,361.42 km) |
| Castellammare di Stabia to Paal | 841.94 mi (1,354.97 km) |
| Castellammare di Stabia to Peer | 840.26 mi (1,352.26 km) |
| Castellammare di Stabia to Pepinster | 799.06 mi (1,285.96 km) |
| Castellammare di Stabia to Peruwelz | 857.18 mi (1,379.49 km) |
| Castellammare di Stabia to Perwez | 828.25 mi (1,332.94 km) |
| Castellammare di Stabia to Philippeville | 812.74 mi (1,307.98 km) |
