| Basingstoke to Oerlinghausen | 420.93 mi (677.43 km) |
| Basingstoke to Oestrich-Winkel | 407.48 mi (655.77 km) |
| Basingstoke to Offenburg | 445.50 mi (716.96 km) |
| Basingstoke to Oftersheim | 445.99 mi (717.75 km) |
| Basingstoke to Ohrdruf | 513.78 mi (826.85 km) |
| Basingstoke to Ohringen | 488.73 mi (786.54 km) |
| Basingstoke to Olbernhau | 627.85 mi (1,010.43 km) |
| Basingstoke to Olching | 592.18 mi (953.03 km) |
| Basingstoke to Oldenburg | 414.30 mi (666.75 km) |
| Basingstoke to Oldenburg in Holstein | 541.52 mi (871.49 km) |
| Basingstoke to Olfen | 365.53 mi (588.26 km) |
| Basingstoke to Olpe | 386.86 mi (622.59 km) |
| Basingstoke to Olsberg | 413.14 mi (664.88 km) |
| Basingstoke to Oranienburg | 616.73 mi (992.53 km) |
| Basingstoke to Ortenberg | 446.90 mi (719.22 km) |
