| Olesa de Montserrat to Octeville | 583.84 mi (939.60 km) |
| Olesa de Montserrat to Oignies | 618.84 mi (995.92 km) |
| Olesa de Montserrat to Oissel | 540.11 mi (869.22 km) |
| Olesa de Montserrat to Olivet | 436.59 mi (702.63 km) |
| Olesa de Montserrat to Ollioules | 229.92 mi (370.02 km) |
| Olesa de Montserrat to Olonne-sur-Mer | 389.89 mi (627.46 km) |
| Olesa de Montserrat to Oloron-Sainte-Marie | 171.11 mi (275.38 km) |
| Olesa de Montserrat to Onet Village | 198.06 mi (318.75 km) |
| Olesa de Montserrat to Onnaing | 616.39 mi (991.98 km) |
| Olesa de Montserrat to Orange | 232.17 mi (373.64 km) |
| Olesa de Montserrat to Orchies | 620.34 mi (998.35 km) |
| Olesa de Montserrat to Orleans | 439.26 mi (706.92 km) |
| Olesa de Montserrat to Orly | 497.99 mi (801.43 km) |
| Olesa de Montserrat to Ormesson-sur-Marne | 501.27 mi (806.71 km) |
| Olesa de Montserrat to Orsay | 494.44 mi (795.72 km) |
