| Mockern to Oestrich-Winkel | 226.49 mi (364.49 km) |
| Mockern to Offenburg | 309.57 mi (498.20 km) |
| Mockern to Oftersheim | 241.40 mi (388.49 km) |
| Mockern to Ohrdruf | 104.77 mi (168.61 km) |
| Mockern to Ohringen | 229.78 mi (369.80 km) |
| Mockern to Olbernhau | 117.95 mi (189.82 km) |
| Mockern to Olching | 273.72 mi (440.50 km) |
| Mockern to Oldenburg | 171.36 mi (275.78 km) |
| Mockern to Oldenburg in Holstein | 155.61 mi (250.44 km) |
| Mockern to Olfen | 196.83 mi (316.77 km) |
| Mockern to Olpe | 193.13 mi (310.81 km) |
| Mockern to Olsberg | 158.13 mi (254.48 km) |
| Mockern to Oranienburg | 68.73 mi (110.61 km) |
| Mockern to Ortenberg | 175.78 mi (282.89 km) |
| Mockern to Oschatz | 76.25 mi (122.71 km) |
