| Most to Oignies | 467.49 mi (752.36 km) |
| Most to Oissel | 563.10 mi (906.23 km) |
| Most to Olivet | 559.79 mi (900.90 km) |
| Most to Ollioules | 627.35 mi (1,009.62 km) |
| Most to Olonne-sur-Mer | 754.86 mi (1,214.82 km) |
| Most to Oloron-Sainte-Marie | 839.10 mi (1,350.40 km) |
| Most to Onet Village | 666.78 mi (1,073.08 km) |
| Most to Onnaing | 441.43 mi (710.41 km) |
| Most to Orange | 602.78 mi (970.08 km) |
| Most to Orchies | 456.48 mi (734.63 km) |
| Most to Orleans | 558.38 mi (898.63 km) |
| Most to Orly | 517.18 mi (832.32 km) |
| Most to Ormesson-sur-Marne | 509.99 mi (820.75 km) |
| Most to Orsay | 527.06 mi (848.22 km) |
| Most to Orthez | 831.89 mi (1,338.80 km) |
