| Monserrat to Octeville | 711.38 mi (1,144.85 km) |
| Monserrat to Oignies | 787.41 mi (1,267.21 km) |
| Monserrat to Oissel | 694.87 mi (1,118.28 km) |
| Monserrat to Olivet | 600.84 mi (966.96 km) |
| Monserrat to Ollioules | 424.69 mi (683.48 km) |
| Monserrat to Olonne-sur-Mer | 499.49 mi (803.85 km) |
| Monserrat to Oloron-Sainte-Marie | 265.09 mi (426.62 km) |
| Monserrat to Onet Village | 383.05 mi (616.47 km) |
| Monserrat to Onnaing | 789.06 mi (1,269.87 km) |
| Monserrat to Orange | 432.19 mi (695.54 km) |
| Monserrat to Orchies | 790.57 mi (1,272.30 km) |
| Monserrat to Orleans | 603.53 mi (971.29 km) |
| Monserrat to Orly | 665.24 mi (1,070.60 km) |
| Monserrat to Ormesson-sur-Marne | 669.68 mi (1,077.74 km) |
| Monserrat to Orsay | 659.97 mi (1,062.12 km) |
