| Monchengladbach to Oestrich-Winkel | 107.68 mi (173.29 km) |
| Monchengladbach to Offenburg | 200.32 mi (322.39 km) |
| Monchengladbach to Oftersheim | 158.09 mi (254.43 km) |
| Monchengladbach to Ohrdruf | 188.62 mi (303.56 km) |
| Monchengladbach to Ohringen | 193.59 mi (311.56 km) |
| Monchengladbach to Olbernhau | 302.59 mi (486.97 km) |
| Monchengladbach to Olching | 300.86 mi (484.19 km) |
| Monchengladbach to Oldenburg | 154.04 mi (247.91 km) |
| Monchengladbach to Oldenburg in Holstein | 283.64 mi (456.47 km) |
| Monchengladbach to Olfen | 54.29 mi (87.37 km) |
| Monchengladbach to Olpe | 62.04 mi (99.84 km) |
| Monchengladbach to Olsberg | 89.21 mi (143.57 km) |
| Monchengladbach to Oranienburg | 308.69 mi (496.78 km) |
| Monchengladbach to Ortenberg | 128.54 mi (206.86 km) |
| Monchengladbach to Oschatz | 288.61 mi (464.47 km) |
