| Robertsville to Oberkirch | 3,903.41 mi (6,281.93 km) |
| Robertsville to Obernburg am Main | 3,908.65 mi (6,290.37 km) |
| Robertsville to Obernkirchen | 3,839.22 mi (6,178.63 km) |
| Robertsville to Oberschleissheim | 4,055.54 mi (6,526.75 km) |
| Robertsville to Oberstdorf | 4,028.72 mi (6,483.60 km) |
| Robertsville to Obertraubling | 4,057.38 mi (6,529.73 km) |
| Robertsville to Obertshausen | 3,889.67 mi (6,259.81 km) |
| Robertsville to Oberursel | 3,875.42 mi (6,236.89 km) |
| Robertsville to Ochsenfurt | 3,951.63 mi (6,359.53 km) |
| Robertsville to Ochsenhausen | 3,994.45 mi (6,428.45 km) |
| Robertsville to Ochtrup | 3,765.65 mi (6,060.23 km) |
| Robertsville to Odenthal | 3,793.80 mi (6,105.53 km) |
| Robertsville to Oelde | 3,813.21 mi (6,136.77 km) |
| Robertsville to Oelsnitz | 4,012.31 mi (6,457.19 km) |
| Robertsville to Oer-Erkenschwick | 3,782.87 mi (6,087.93 km) |
