| Grenada to Oerlinghausen | 4,750.14 mi (7,644.61 km) |
| Grenada to Oestrich-Winkel | 4,788.84 mi (7,706.90 km) |
| Grenada to Offenburg | 4,836.85 mi (7,784.16 km) |
| Grenada to Oftersheim | 4,832.62 mi (7,777.35 km) |
| Grenada to Ohrdruf | 4,866.16 mi (7,831.33 km) |
| Grenada to Ohringen | 4,874.37 mi (7,844.54 km) |
| Grenada to Olbernhau | 4,969.57 mi (7,997.74 km) |
| Grenada to Olching | 4,980.75 mi (8,015.74 km) |
| Grenada to Oldenburg | 4,695.43 mi (7,556.57 km) |
| Grenada to Oldenburg in Holstein | 4,754.06 mi (7,650.92 km) |
| Grenada to Olfen | 4,709.67 mi (7,579.49 km) |
| Grenada to Olpe | 4,749.29 mi (7,643.24 km) |
| Grenada to Olsberg | 4,763.31 mi (7,665.81 km) |
| Grenada to Oranienburg | 4,891.09 mi (7,871.44 km) |
| Grenada to Ortenberg | 4,818.06 mi (7,753.92 km) |
