| Apex to Oberkirch | 4,299.09 mi (6,918.71 km) |
| Apex to Obernburg am Main | 4,306.69 mi (6,930.95 km) |
| Apex to Obernkirchen | 4,240.15 mi (6,823.86 km) |
| Apex to Oberschleissheim | 4,452.42 mi (7,165.48 km) |
| Apex to Oberstdorf | 4,423.72 mi (7,119.29 km) |
| Apex to Obertraubling | 4,455.50 mi (7,170.43 km) |
| Apex to Obertshausen | 4,287.89 mi (6,900.68 km) |
| Apex to Oberursel | 4,273.73 mi (6,877.90 km) |
| Apex to Ochsenfurt | 4,349.77 mi (7,000.28 km) |
| Apex to Ochsenhausen | 4,390.31 mi (7,065.52 km) |
| Apex to Ochtrup | 4,165.98 mi (6,704.50 km) |
| Apex to Odenthal | 4,192.68 mi (6,747.47 km) |
| Apex to Oelde | 4,213.39 mi (6,780.80 km) |
| Apex to Oelsnitz | 4,412.17 mi (7,100.70 km) |
| Apex to Oer-Erkenschwick | 4,182.55 mi (6,731.17 km) |
