| Fort Hood to Octeville | 4,867.67 mi (7,833.76 km) |
| Fort Hood to Oignies | 5,024.91 mi (8,086.82 km) |
| Fort Hood to Oissel | 4,986.38 mi (8,024.80 km) |
| Fort Hood to Olivet | 5,066.71 mi (8,154.08 km) |
| Fort Hood to Ollioules | 5,395.51 mi (8,683.23 km) |
| Fort Hood to Olonne-sur-Mer | 4,955.48 mi (7,975.07 km) |
| Fort Hood to Oloron-Sainte-Marie | 5,111.57 mi (8,226.28 km) |
| Fort Hood to Onet Village | 5,212.65 mi (8,388.96 km) |
| Fort Hood to Onnaing | 5,050.98 mi (8,128.76 km) |
| Fort Hood to Orange | 5,315.30 mi (8,554.15 km) |
| Fort Hood to Orchies | 5,034.43 mi (8,102.13 km) |
| Fort Hood to Orleans | 5,065.79 mi (8,152.60 km) |
| Fort Hood to Orly | 5,057.79 mi (8,139.72 km) |
| Fort Hood to Ormesson-sur-Marne | 5,062.24 mi (8,146.89 km) |
| Fort Hood to Orsay | 5,051.05 mi (8,128.88 km) |
