| Sinaia to Opwijk | 1,053.86 mi (1,696.02 km) |
| Sinaia to Ostend | 1,111.31 mi (1,788.49 km) |
| Sinaia to Oud-Heverlee | 1,031.24 mi (1,659.62 km) |
| Sinaia to Oud-Turnhout | 1,026.30 mi (1,651.67 km) |
| Sinaia to Oudenaarde | 1,076.88 mi (1,733.08 km) |
| Sinaia to Oudenburg | 1,107.27 mi (1,781.98 km) |
| Sinaia to Oupeye | 987.74 mi (1,589.62 km) |
| Sinaia to Overijse | 1,036.12 mi (1,667.47 km) |
| Sinaia to Overpelt | 1,006.39 mi (1,619.63 km) |
| Sinaia to Paal | 1,013.34 mi (1,630.82 km) |
| Sinaia to Peer | 1,003.28 mi (1,614.63 km) |
| Sinaia to Pepinster | 977.98 mi (1,573.91 km) |
| Sinaia to Peruwelz | 1,073.01 mi (1,726.84 km) |
| Sinaia to Perwez | 1,021.64 mi (1,644.17 km) |
| Sinaia to Philippeville | 1,027.02 mi (1,652.82 km) |
