| Portales to Oberkirch | 5,337.54 mi (8,589.94 km) |
| Portales to Obernburg am Main | 5,319.45 mi (8,560.82 km) |
| Portales to Obernkirchen | 5,215.22 mi (8,393.09 km) |
| Portales to Oberschleissheim | 5,474.00 mi (8,809.56 km) |
| Portales to Oberstdorf | 5,465.35 mi (8,795.62 km) |
| Portales to Obertraubling | 5,462.88 mi (8,791.65 km) |
| Portales to Obertshausen | 5,299.00 mi (8,527.91 km) |
| Portales to Oberursel | 5,284.24 mi (8,504.16 km) |
| Portales to Ochsenfurt | 5,359.91 mi (8,625.94 km) |
| Portales to Ochsenhausen | 5,424.44 mi (8,729.79 km) |
| Portales to Ochtrup | 5,152.78 mi (8,292.60 km) |
| Portales to Odenthal | 5,198.57 mi (8,366.29 km) |
| Portales to Oelde | 5,200.86 mi (8,369.97 km) |
| Portales to Oelsnitz | 5,397.91 mi (8,687.09 km) |
| Portales to Oer-Erkenschwick | 5,178.06 mi (8,333.29 km) |
