| Southport to Oberkirch | 595.93 mi (959.05 km) |
| Southport to Obernburg am Main | 581.41 mi (935.69 km) |
| Southport to Obernkirchen | 512.88 mi (825.39 km) |
| Southport to Oberschleissheim | 733.81 mi (1,180.95 km) |
| Southport to Oberstdorf | 723.51 mi (1,164.38 km) |
| Southport to Obertraubling | 728.85 mi (1,172.98 km) |
| Southport to Obertshausen | 561.59 mi (903.80 km) |
| Southport to Oberursel | 547.02 mi (880.35 km) |
| Southport to Ochsenfurt | 623.51 mi (1,003.45 km) |
| Southport to Ochsenhausen | 682.15 mi (1,097.82 km) |
| Southport to Ochtrup | 435.78 mi (701.32 km) |
| Southport to Odenthal | 463.37 mi (745.72 km) |
| Southport to Oelde | 482.61 mi (776.69 km) |
| Southport to Oelsnitz | 680.88 mi (1,095.77 km) |
| Southport to Oer-Erkenschwick | 451.26 mi (726.23 km) |
