| Lanham to Octeville | 3,632.59 mi (5,846.09 km) |
| Lanham to Oignies | 3,806.18 mi (6,125.45 km) |
| Lanham to Oissel | 3,754.77 mi (6,042.72 km) |
| Lanham to Olivet | 3,826.40 mi (6,157.99 km) |
| Lanham to Ollioules | 4,135.70 mi (6,655.77 km) |
| Lanham to Olonne-sur-Mer | 3,699.54 mi (5,953.83 km) |
| Lanham to Oloron-Sainte-Marie | 3,840.09 mi (6,180.04 km) |
| Lanham to Onet Village | 3,952.67 mi (6,361.21 km) |
| Lanham to Onnaing | 3,833.02 mi (6,168.64 km) |
| Lanham to Orange | 4,058.58 mi (6,531.65 km) |
| Lanham to Orchies | 3,816.32 mi (6,141.78 km) |
| Lanham to Orleans | 3,825.76 mi (6,156.96 km) |
| Lanham to Orly | 3,824.67 mi (6,155.21 km) |
| Lanham to Ormesson-sur-Marne | 3,829.74 mi (6,163.38 km) |
| Lanham to Orsay | 3,817.15 mi (6,143.11 km) |
