| Grenada to Oberkirch | 4,840.65 mi (7,790.27 km) |
| Grenada to Obernburg am Main | 4,838.68 mi (7,787.11 km) |
| Grenada to Obernkirchen | 4,757.21 mi (7,656.00 km) |
| Grenada to Oberschleissheim | 4,988.82 mi (8,028.73 km) |
| Grenada to Oberstdorf | 4,967.34 mi (7,994.17 km) |
| Grenada to Obertraubling | 4,986.61 mi (8,025.17 km) |
| Grenada to Obertshausen | 4,819.11 mi (7,755.61 km) |
| Grenada to Oberursel | 4,804.61 mi (7,732.28 km) |
| Grenada to Ochsenfurt | 4,881.11 mi (7,855.39 km) |
| Grenada to Ochsenhausen | 4,930.92 mi (7,935.55 km) |
| Grenada to Ochtrup | 4,686.93 mi (7,542.89 km) |
| Grenada to Odenthal | 4,721.17 mi (7,597.98 km) |
| Grenada to Oelde | 4,735.00 mi (7,620.25 km) |
| Grenada to Oelsnitz | 4,934.76 mi (7,941.73 km) |
| Grenada to Oer-Erkenschwick | 4,706.99 mi (7,575.17 km) |
