| Ardmore to Oberkirch | 5,105.44 mi (8,216.41 km) |
| Ardmore to Obernburg am Main | 5,094.55 mi (8,198.89 km) |
| Ardmore to Obernkirchen | 5,000.23 mi (8,047.09 km) |
| Ardmore to Oberschleissheim | 5,247.60 mi (8,445.20 km) |
| Ardmore to Oberstdorf | 5,233.13 mi (8,421.91 km) |
| Ardmore to Obertraubling | 5,240.46 mi (8,433.71 km) |
| Ardmore to Obertshausen | 5,074.43 mi (8,166.51 km) |
| Ardmore to Oberursel | 5,059.74 mi (8,142.87 km) |
| Ardmore to Ochsenfurt | 5,136.03 mi (8,265.64 km) |
| Ardmore to Ochsenhausen | 5,194.12 mi (8,359.13 km) |
| Ardmore to Ochtrup | 4,934.05 mi (7,940.59 km) |
| Ardmore to Odenthal | 4,974.79 mi (8,006.16 km) |
| Ardmore to Oelde | 4,982.28 mi (8,018.21 km) |
| Ardmore to Oelsnitz | 5,181.21 mi (8,338.36 km) |
| Ardmore to Oer-Erkenschwick | 4,957.07 mi (7,977.63 km) |
