| Monchengladbach to Oria | 912.73 mi (1,468.90 km) |
| Monchengladbach to Oristano | 787.22 mi (1,266.90 km) |
| Monchengladbach to Orta Nova | 811.84 mi (1,306.53 km) |
| Monchengladbach to Orte | 665.66 mi (1,071.28 km) |
| Monchengladbach to Ortona | 717.39 mi (1,154.53 km) |
| Monchengladbach to Orvieto | 643.81 mi (1,036.11 km) |
| Monchengladbach to Orzinuovi | 431.70 mi (694.75 km) |
| Monchengladbach to Osimo | 626.42 mi (1,008.12 km) |
| Monchengladbach to Ospitaletto | 424.15 mi (682.60 km) |
| Monchengladbach to Ostuni | 897.72 mi (1,444.74 km) |
| Monchengladbach to Ottaviano | 811.47 mi (1,305.93 km) |
| Monchengladbach to Ovada | 464.69 mi (747.84 km) |
| Monchengladbach to Ozieri | 743.65 mi (1,196.79 km) |
| Monchengladbach to Paceco | 960.66 mi (1,546.03 km) |
| Monchengladbach to Pachino | 1,087.78 mi (1,750.61 km) |
