| Royal Leamington Spa to Oberkirch | 496.25 mi (798.65 km) |
| Royal Leamington Spa to Obernburg am Main | 493.07 mi (793.52 km) |
| Royal Leamington Spa to Obernkirchen | 450.00 mi (724.20 km) |
| Royal Leamington Spa to Oberschleissheim | 641.29 mi (1,032.06 km) |
| Royal Leamington Spa to Oberstdorf | 624.06 mi (1,004.33 km) |
| Royal Leamington Spa to Obertraubling | 641.86 mi (1,032.97 km) |
| Royal Leamington Spa to Obertshausen | 474.26 mi (763.24 km) |
| Royal Leamington Spa to Oberursel | 460.15 mi (740.54 km) |
| Royal Leamington Spa to Ochsenfurt | 536.13 mi (862.82 km) |
| Royal Leamington Spa to Ochsenhausen | 584.88 mi (941.28 km) |
| Royal Leamington Spa to Ochtrup | 369.00 mi (593.85 km) |
| Royal Leamington Spa to Odenthal | 380.69 mi (612.66 km) |
| Royal Leamington Spa to Oelde | 412.40 mi (663.69 km) |
| Royal Leamington Spa to Oelsnitz | 604.34 mi (972.59 km) |
| Royal Leamington Spa to Oer-Erkenschwick | 376.54 mi (605.98 km) |
