| Martos to Opwijk | 998.68 mi (1,607.22 km) |
| Martos to Ostend | 992.14 mi (1,596.69 km) |
| Martos to Oud-Heverlee | 1,000.25 mi (1,609.74 km) |
| Martos to Oud-Turnhout | 1,036.16 mi (1,667.54 km) |
| Martos to Oudenaarde | 980.32 mi (1,577.67 km) |
| Martos to Oudenburg | 990.77 mi (1,594.49 km) |
| Martos to Oupeye | 1,014.02 mi (1,631.91 km) |
| Martos to Overijse | 994.45 mi (1,600.41 km) |
| Martos to Overpelt | 1,039.24 mi (1,672.49 km) |
| Martos to Paal | 1,023.35 mi (1,646.92 km) |
| Martos to Peer | 1,035.01 mi (1,665.69 km) |
| Martos to Pepinster | 1,009.71 mi (1,624.98 km) |
| Martos to Peruwelz | 959.21 mi (1,543.69 km) |
| Martos to Perwez | 990.70 mi (1,594.37 km) |
| Martos to Philippeville | 959.43 mi (1,544.05 km) |
