| Flero to Octeville | 620.02 mi (997.82 km) |
| Flero to Oignies | 478.10 mi (769.42 km) |
| Flero to Oissel | 500.92 mi (806.15 km) |
| Flero to Olivet | 425.06 mi (684.07 km) |
| Flero to Ollioules | 268.28 mi (431.75 km) |
| Flero to Olonne-sur-Mer | 577.35 mi (929.16 km) |
| Flero to Oloron-Sainte-Marie | 555.26 mi (893.60 km) |
| Flero to Onet Village | 378.67 mi (609.40 km) |
| Flero to Onnaing | 455.16 mi (732.51 km) |
| Flero to Orange | 278.84 mi (448.75 km) |
| Flero to Orchies | 470.42 mi (757.07 km) |
| Flero to Orleans | 425.60 mi (684.94 km) |
| Flero to Orly | 429.37 mi (691.01 km) |
| Flero to Ormesson-sur-Marne | 425.00 mi (683.97 km) |
| Flero to Orsay | 436.13 mi (701.88 km) |
