| Americus to Octeville | 4,257.10 mi (6,851.13 km) |
| Americus to Oignies | 4,433.59 mi (7,135.18 km) |
| Americus to Oissel | 4,379.84 mi (7,048.68 km) |
| Americus to Olivet | 4,449.17 mi (7,160.25 km) |
| Americus to Ollioules | 4,750.68 mi (7,645.48 km) |
| Americus to Olonne-sur-Mer | 4,317.31 mi (6,948.04 km) |
| Americus to Oloron-Sainte-Marie | 4,449.42 mi (7,160.65 km) |
| Americus to Onet Village | 4,568.03 mi (7,351.53 km) |
| Americus to Onnaing | 4,460.51 mi (7,178.50 km) |
| Americus to Orange | 4,675.13 mi (7,523.89 km) |
| Americus to Orchies | 4,443.82 mi (7,151.63 km) |
| Americus to Orleans | 4,448.61 mi (7,159.34 km) |
| Americus to Orly | 4,449.27 mi (7,160.40 km) |
| Americus to Ormesson-sur-Marne | 4,454.48 mi (7,168.79 km) |
| Americus to Orsay | 4,441.58 mi (7,148.03 km) |
