| Hard to Oignies | 366.67 mi (590.10 km) |
| Hard to Oissel | 414.30 mi (666.76 km) |
| Hard to Olivet | 363.14 mi (584.42 km) |
| Hard to Ollioules | 353.72 mi (569.26 km) |
| Hard to Olonne-sur-Mer | 543.51 mi (874.70 km) |
| Hard to Oloron-Sainte-Marie | 580.77 mi (934.66 km) |
| Hard to Onet Village | 403.35 mi (649.13 km) |
| Hard to Onnaing | 341.22 mi (549.14 km) |
| Hard to Orange | 329.78 mi (530.73 km) |
| Hard to Orchies | 357.54 mi (575.41 km) |
| Hard to Orleans | 362.82 mi (583.90 km) |
| Hard to Orly | 347.44 mi (559.14 km) |
| Hard to Ormesson-sur-Marne | 341.56 mi (549.69 km) |
| Hard to Orsay | 356.00 mi (572.92 km) |
| Hard to Orthez | 576.52 mi (927.82 km) |
