| Sidcup to Oerlinghausen | 368.45 mi (592.97 km) |
| Sidcup to Oestrich-Winkel | 359.10 mi (577.91 km) |
| Sidcup to Offenburg | 403.47 mi (649.33 km) |
| Sidcup to Oftersheim | 399.39 mi (642.75 km) |
| Sidcup to Ohrdruf | 462.40 mi (744.16 km) |
| Sidcup to Ohringen | 441.87 mi (711.12 km) |
| Sidcup to Olbernhau | 576.32 mi (927.50 km) |
| Sidcup to Olching | 546.69 mi (879.81 km) |
| Sidcup to Oldenburg | 362.56 mi (583.49 km) |
| Sidcup to Oldenburg in Holstein | 490.93 mi (790.08 km) |
| Sidcup to Olfen | 313.18 mi (504.02 km) |
| Sidcup to Olpe | 335.58 mi (540.07 km) |
| Sidcup to Olsberg | 361.20 mi (581.30 km) |
| Sidcup to Oranienburg | 564.26 mi (908.10 km) |
| Sidcup to Ortenberg | 396.88 mi (638.72 km) |
