| Sidmouth to Oberkirch | 527.60 mi (849.09 km) |
| Sidmouth to Obernburg am Main | 549.28 mi (883.98 km) |
| Sidmouth to Obernkirchen | 542.26 mi (872.69 km) |
| Sidmouth to Oberschleissheim | 684.43 mi (1,101.49 km) |
| Sidmouth to Oberstdorf | 651.44 mi (1,048.38 km) |
| Sidmouth to Obertraubling | 695.54 mi (1,119.37 km) |
| Sidmouth to Obertshausen | 533.07 mi (857.90 km) |
| Sidmouth to Oberursel | 520.42 mi (837.54 km) |
| Sidmouth to Ochsenfurt | 592.37 mi (953.33 km) |
| Sidmouth to Ochsenhausen | 619.02 mi (996.22 km) |
| Sidmouth to Ochtrup | 460.90 mi (741.75 km) |
| Sidmouth to Odenthal | 451.96 mi (727.36 km) |
| Sidmouth to Oelde | 498.34 mi (802.00 km) |
| Sidmouth to Oelsnitz | 675.39 mi (1,086.94 km) |
| Sidmouth to Oer-Erkenschwick | 458.96 mi (738.62 km) |
