| Greer to Oberkirch | 4,475.82 mi (7,203.14 km) |
| Greer to Obernburg am Main | 4,480.85 mi (7,211.23 km) |
| Greer to Obernkirchen | 4,410.16 mi (7,097.47 km) |
| Greer to Oberschleissheim | 4,627.90 mi (7,447.88 km) |
| Greer to Oberstdorf | 4,601.11 mi (7,404.76 km) |
| Greer to Obertraubling | 4,629.55 mi (7,450.54 km) |
| Greer to Obertshausen | 4,461.82 mi (7,180.61 km) |
| Greer to Oberursel | 4,447.56 mi (7,157.65 km) |
| Greer to Ochsenfurt | 4,523.79 mi (7,280.34 km) |
| Greer to Ochsenhausen | 4,566.86 mi (7,349.66 km) |
| Greer to Ochtrup | 4,336.99 mi (6,979.71 km) |
| Greer to Odenthal | 4,365.78 mi (7,026.05 km) |
| Greer to Oelde | 4,384.63 mi (7,056.37 km) |
| Greer to Oelsnitz | 4,583.87 mi (7,377.03 km) |
| Greer to Oer-Erkenschwick | 4,354.53 mi (7,007.95 km) |
