| Sillamae to Opwijk | 1,088.92 mi (1,752.44 km) |
| Sillamae to Ostend | 1,118.88 mi (1,800.67 km) |
| Sillamae to Oud-Heverlee | 1,079.34 mi (1,737.02 km) |
| Sillamae to Oud-Turnhout | 1,046.90 mi (1,684.82 km) |
| Sillamae to Oudenaarde | 1,113.32 mi (1,791.72 km) |
| Sillamae to Oudenburg | 1,118.09 mi (1,799.40 km) |
| Sillamae to Oupeye | 1,053.80 mi (1,695.92 km) |
| Sillamae to Overijse | 1,085.97 mi (1,747.71 km) |
| Sillamae to Overpelt | 1,037.38 mi (1,669.51 km) |
| Sillamae to Paal | 1,053.44 mi (1,695.35 km) |
| Sillamae to Peer | 1,040.05 mi (1,673.80 km) |
| Sillamae to Pepinster | 1,055.00 mi (1,697.86 km) |
| Sillamae to Peruwelz | 1,129.19 mi (1,817.26 km) |
| Sillamae to Perwez | 1,084.30 mi (1,745.01 km) |
| Sillamae to Philippeville | 1,112.86 mi (1,790.98 km) |
