| Baldock to Oerlinghausen | 376.70 mi (606.24 km) |
| Baldock to Oestrich-Winkel | 381.51 mi (613.98 km) |
| Baldock to Offenburg | 433.41 mi (697.50 km) |
| Baldock to Oftersheim | 424.29 mi (682.83 km) |
| Baldock to Ohrdruf | 477.07 mi (767.76 km) |
| Baldock to Ohringen | 466.20 mi (750.27 km) |
| Baldock to Olbernhau | 590.07 mi (949.63 km) |
| Baldock to Olching | 572.44 mi (921.25 km) |
| Baldock to Oldenburg | 361.60 mi (581.94 km) |
| Baldock to Oldenburg in Holstein | 485.24 mi (780.92 km) |
| Baldock to Olfen | 323.61 mi (520.80 km) |
| Baldock to Olpe | 351.37 mi (565.47 km) |
| Baldock to Olsberg | 374.05 mi (601.98 km) |
| Baldock to Oranienburg | 568.01 mi (914.13 km) |
| Baldock to Ortenberg | 415.79 mi (669.14 km) |
