| Monrovia to Octeville | 5,461.84 mi (8,789.98 km) |
| Monrovia to Oignies | 5,574.23 mi (8,970.85 km) |
| Monrovia to Oissel | 5,566.34 mi (8,958.15 km) |
| Monrovia to Olivet | 5,663.21 mi (9,114.05 km) |
| Monrovia to Ollioules | 6,029.17 mi (9,703.02 km) |
| Monrovia to Olonne-sur-Mer | 5,597.78 mi (9,008.76 km) |
| Monrovia to Oloron-Sainte-Marie | 5,794.32 mi (9,325.06 km) |
| Monrovia to Onet Village | 5,854.89 mi (9,422.54 km) |
| Monrovia to Onnaing | 5,597.21 mi (9,007.84 km) |
| Monrovia to Orange | 5,943.47 mi (9,565.09 km) |
| Monrovia to Orchies | 5,581.87 mi (8,983.15 km) |
| Monrovia to Orleans | 5,661.65 mi (9,111.55 km) |
| Monrovia to Orly | 5,637.56 mi (9,072.77 km) |
| Monrovia to Ormesson-sur-Marne | 5,640.33 mi (9,077.23 km) |
| Monrovia to Orsay | 5,632.99 mi (9,065.42 km) |
