| Mesolongi to Opwijk | 1,208.95 mi (1,945.61 km) |
| Mesolongi to Ostend | 1,263.04 mi (2,032.66 km) |
| Mesolongi to Oud-Heverlee | 1,186.85 mi (1,910.06 km) |
| Mesolongi to Oud-Turnhout | 1,198.37 mi (1,928.59 km) |
| Mesolongi to Oudenaarde | 1,223.76 mi (1,969.46 km) |
| Mesolongi to Oudenburg | 1,258.48 mi (2,025.33 km) |
| Mesolongi to Oupeye | 1,148.96 mi (1,849.07 km) |
| Mesolongi to Overijse | 1,189.11 mi (1,913.69 km) |
| Mesolongi to Overpelt | 1,179.85 mi (1,898.79 km) |
| Mesolongi to Paal | 1,179.48 mi (1,898.19 km) |
| Mesolongi to Peer | 1,174.76 mi (1,890.59 km) |
| Mesolongi to Pepinster | 1,136.77 mi (1,829.45 km) |
| Mesolongi to Peruwelz | 1,210.33 mi (1,947.84 km) |
| Mesolongi to Perwez | 1,172.60 mi (1,887.12 km) |
| Mesolongi to Philippeville | 1,163.22 mi (1,872.02 km) |
