| Fort Morgan to Oerlinghausen | 4,889.81 mi (7,869.39 km) |
| Fort Morgan to Oestrich-Winkel | 4,958.57 mi (7,980.05 km) |
| Fort Morgan to Offenburg | 5,027.10 mi (8,090.33 km) |
| Fort Morgan to Oftersheim | 5,007.10 mi (8,058.14 km) |
| Fort Morgan to Ohrdruf | 5,008.62 mi (8,060.59 km) |
| Fort Morgan to Ohringen | 5,045.45 mi (8,119.87 km) |
| Fort Morgan to Olbernhau | 5,097.99 mi (8,204.42 km) |
| Fort Morgan to Olching | 5,153.10 mi (8,293.11 km) |
| Fort Morgan to Oldenburg | 4,821.78 mi (7,759.91 km) |
| Fort Morgan to Oldenburg in Holstein | 4,849.94 mi (7,805.23 km) |
| Fort Morgan to Olfen | 4,860.05 mi (7,821.49 km) |
| Fort Morgan to Olpe | 4,906.49 mi (7,896.23 km) |
| Fort Morgan to Olsberg | 4,912.28 mi (7,905.55 km) |
| Fort Morgan to Oranienburg | 4,993.56 mi (8,036.35 km) |
| Fort Morgan to Ortenberg | 4,976.80 mi (8,009.38 km) |
