| Mercato San Severino to Opwijk | 866.61 mi (1,394.67 km) |
| Mercato San Severino to Ostend | 916.23 mi (1,474.53 km) |
| Mercato San Severino to Oud-Heverlee | 846.14 mi (1,361.72 km) |
| Mercato San Severino to Oud-Turnhout | 864.21 mi (1,390.82 km) |
| Mercato San Severino to Oudenaarde | 877.13 mi (1,411.60 km) |
| Mercato San Severino to Oudenburg | 911.71 mi (1,467.25 km) |
| Mercato San Severino to Oupeye | 813.35 mi (1,308.97 km) |
| Mercato San Severino to Overijse | 847.12 mi (1,363.31 km) |
| Mercato San Severino to Overpelt | 847.63 mi (1,364.12 km) |
| Mercato San Severino to Paal | 843.92 mi (1,358.16 km) |
| Mercato San Severino to Peer | 841.98 mi (1,355.03 km) |
| Mercato San Severino to Pepinster | 800.97 mi (1,289.03 km) |
| Mercato San Severino to Peruwelz | 860.61 mi (1,385.02 km) |
| Mercato San Severino to Perwez | 830.81 mi (1,337.06 km) |
| Mercato San Severino to Philippeville | 815.84 mi (1,312.97 km) |
