| Twickenham to Oerlinghausen | 386.90 mi (622.65 km) |
| Twickenham to Oestrich-Winkel | 377.91 mi (608.19 km) |
| Twickenham to Offenburg | 421.08 mi (677.67 km) |
| Twickenham to Oftersheim | 417.94 mi (672.61 km) |
| Twickenham to Ohrdruf | 481.35 mi (774.65 km) |
| Twickenham to Ohringen | 460.47 mi (741.06 km) |
| Twickenham to Olbernhau | 595.25 mi (957.96 km) |
| Twickenham to Olching | 565.07 mi (909.40 km) |
| Twickenham to Oldenburg | 379.55 mi (610.83 km) |
| Twickenham to Oldenburg in Holstein | 506.97 mi (815.89 km) |
| Twickenham to Olfen | 331.82 mi (534.01 km) |
| Twickenham to Olpe | 354.55 mi (570.59 km) |
| Twickenham to Olsberg | 380.04 mi (611.62 km) |
| Twickenham to Oranienburg | 582.21 mi (936.98 km) |
| Twickenham to Ortenberg | 415.86 mi (669.26 km) |
