| Bergisch Gladbach to Oestrich-Winkel | 78.47 mi (126.28 km) |
| Bergisch Gladbach to Offenburg | 178.11 mi (286.64 km) |
| Bergisch Gladbach to Oftersheim | 129.18 mi (207.89 km) |
| Bergisch Gladbach to Ohrdruf | 157.34 mi (253.21 km) |
| Bergisch Gladbach to Ohringen | 162.34 mi (261.26 km) |
| Bergisch Gladbach to Olbernhau | 271.56 mi (437.03 km) |
| Bergisch Gladbach to Olching | 268.91 mi (432.77 km) |
| Bergisch Gladbach to Oldenburg | 155.65 mi (250.50 km) |
| Bergisch Gladbach to Oldenburg in Holstein | 277.40 mi (446.43 km) |
| Bergisch Gladbach to Olfen | 51.26 mi (82.50 km) |
| Bergisch Gladbach to Olpe | 30.61 mi (49.27 km) |
| Bergisch Gladbach to Olsberg | 63.62 mi (102.39 km) |
| Bergisch Gladbach to Oranienburg | 287.44 mi (462.58 km) |
| Bergisch Gladbach to Ortenberg | 95.05 mi (152.97 km) |
| Bergisch Gladbach to Oschatz | 259.87 mi (418.22 km) |
