| Sastamala to Opwijk | 1,009.47 mi (1,624.59 km) |
| Sastamala to Ostend | 1,029.71 mi (1,657.16 km) |
| Sastamala to Oud-Heverlee | 1,004.09 mi (1,615.92 km) |
| Sastamala to Oud-Turnhout | 969.16 mi (1,559.72 km) |
| Sastamala to Oudenaarde | 1,031.42 mi (1,659.91 km) |
| Sastamala to Oudenburg | 1,029.76 mi (1,657.24 km) |
| Sastamala to Oupeye | 985.99 mi (1,586.79 km) |
| Sastamala to Overijse | 1,010.34 mi (1,625.99 km) |
| Sastamala to Overpelt | 963.36 mi (1,550.38 km) |
| Sastamala to Paal | 979.51 mi (1,576.38 km) |
| Sastamala to Peer | 967.06 mi (1,556.33 km) |
| Sastamala to Pepinster | 989.64 mi (1,592.67 km) |
| Sastamala to Peruwelz | 1,050.11 mi (1,689.99 km) |
| Sastamala to Perwez | 1,011.87 mi (1,628.44 km) |
| Sastamala to Philippeville | 1,042.46 mi (1,677.68 km) |
