| Bochum to Oestrich-Winkel | 107.98 mi (173.77 km) |
| Bochum to Offenburg | 210.75 mi (339.17 km) |
| Bochum to Oftersheim | 157.82 mi (253.99 km) |
| Bochum to Ohrdruf | 158.95 mi (255.80 km) |
| Bochum to Ohringen | 187.07 mi (301.06 km) |
| Bochum to Olbernhau | 271.39 mi (436.77 km) |
| Bochum to Olching | 291.13 mi (468.52 km) |
| Bochum to Oldenburg | 122.32 mi (196.86 km) |
| Bochum to Oldenburg in Holstein | 247.49 mi (398.30 km) |
| Bochum to Olfen | 17.74 mi (28.56 km) |
| Bochum to Olpe | 41.79 mi (67.25 km) |
| Bochum to Olsberg | 55.37 mi (89.11 km) |
| Bochum to Oranienburg | 270.06 mi (434.62 km) |
| Bochum to Ortenberg | 111.68 mi (179.73 km) |
| Bochum to Oschatz | 254.24 mi (409.17 km) |
