| Ottendorf-Okrilla to Opwijk | 418.58 mi (673.65 km) |
| Ottendorf-Okrilla to Ostend | 471.75 mi (759.20 km) |
| Ottendorf-Okrilla to Oud-Heverlee | 398.67 mi (641.60 km) |
| Ottendorf-Okrilla to Oud-Turnhout | 382.33 mi (615.30 km) |
| Ottendorf-Okrilla to Oudenaarde | 444.73 mi (715.73 km) |
| Ottendorf-Okrilla to Oudenburg | 468.47 mi (753.94 km) |
| Ottendorf-Okrilla to Oupeye | 357.54 mi (575.40 km) |
| Ottendorf-Okrilla to Overijse | 404.88 mi (651.60 km) |
| Ottendorf-Okrilla to Overpelt | 363.90 mi (585.65 km) |
| Ottendorf-Okrilla to Paal | 375.28 mi (603.96 km) |
| Ottendorf-Okrilla to Peer | 362.64 mi (583.62 km) |
| Ottendorf-Okrilla to Pepinster | 351.59 mi (565.83 km) |
| Ottendorf-Okrilla to Peruwelz | 448.80 mi (722.28 km) |
| Ottendorf-Okrilla to Perwez | 394.27 mi (634.51 km) |
| Ottendorf-Okrilla to Philippeville | 411.34 mi (661.99 km) |
