| Fort Meade to Octeville | 3,622.31 mi (5,829.54 km) |
| Fort Meade to Oignies | 3,795.72 mi (6,108.63 km) |
| Fort Meade to Oissel | 3,744.45 mi (6,026.12 km) |
| Fort Meade to Olivet | 3,816.20 mi (6,141.58 km) |
| Fort Meade to Ollioules | 4,125.84 mi (6,639.89 km) |
| Fort Meade to Olonne-sur-Mer | 3,689.57 mi (5,937.79 km) |
| Fort Meade to Oloron-Sainte-Marie | 3,830.46 mi (6,164.53 km) |
| Fort Meade to Onet Village | 3,942.80 mi (6,345.32 km) |
| Fort Meade to Onnaing | 3,822.56 mi (6,151.81 km) |
| Fort Meade to Orange | 4,048.65 mi (6,515.68 km) |
| Fort Meade to Orchies | 3,805.86 mi (6,124.94 km) |
| Fort Meade to Orleans | 3,815.56 mi (6,140.54 km) |
| Fort Meade to Orly | 3,814.38 mi (6,138.65 km) |
| Fort Meade to Ormesson-sur-Marne | 3,819.44 mi (6,146.80 km) |
| Fort Meade to Orsay | 3,806.87 mi (6,126.56 km) |
