| Loos to Oignies | 9.96 mi (16.04 km) |
| Loos to Oissel | 122.51 mi (197.17 km) |
| Loos to Olivet | 196.46 mi (316.17 km) |
| Loos to Ollioules | 533.30 mi (858.27 km) |
| Loos to Olonne-sur-Mer | 356.54 mi (573.79 km) |
| Loos to Oloron-Sainte-Marie | 540.16 mi (869.30 km) |
| Loos to Onet Village | 432.08 mi (695.37 km) |
| Loos to Onnaing | 30.00 mi (48.27 km) |
| Loos to Orange | 455.13 mi (732.45 km) |
| Loos to Orchies | 13.89 mi (22.35 km) |
| Loos to Orleans | 193.78 mi (311.86 km) |
| Loos to Orly | 132.08 mi (212.57 km) |
| Loos to Ormesson-sur-Marne | 128.01 mi (206.02 km) |
| Loos to Orsay | 137.36 mi (221.07 km) |
| Loos to Orthez | 523.35 mi (842.25 km) |
