| Helsinki to Opwijk | 1,022.99 mi (1,646.34 km) |
| Helsinki to Ostend | 1,048.68 mi (1,687.69 km) |
| Helsinki to Oud-Heverlee | 1,015.28 mi (1,633.94 km) |
| Helsinki to Oud-Turnhout | 981.55 mi (1,579.65 km) |
| Helsinki to Oudenaarde | 1,046.38 mi (1,683.99 km) |
| Helsinki to Oudenburg | 1,048.26 mi (1,687.02 km) |
| Helsinki to Oupeye | 993.07 mi (1,598.19 km) |
| Helsinki to Overijse | 1,021.78 mi (1,644.39 km) |
| Helsinki to Overpelt | 973.69 mi (1,567.00 km) |
| Helsinki to Paal | 989.87 mi (1,593.05 km) |
| Helsinki to Peer | 976.85 mi (1,572.08 km) |
| Helsinki to Pepinster | 995.42 mi (1,601.97 km) |
| Helsinki to Peruwelz | 1,063.61 mi (1,711.71 km) |
| Helsinki to Perwez | 1,021.57 mi (1,644.06 km) |
| Helsinki to Philippeville | 1,051.21 mi (1,691.76 km) |
