| Hirson to Oignies | 61.29 mi (98.64 km) |
| Hirson to Oissel | 139.77 mi (224.94 km) |
| Hirson to Olivet | 173.34 mi (278.96 km) |
| Hirson to Ollioules | 476.01 mi (766.06 km) |
| Hirson to Olonne-sur-Mer | 356.72 mi (574.09 km) |
| Hirson to Oloron-Sainte-Marie | 515.23 mi (829.18 km) |
| Hirson to Onet Village | 390.20 mi (627.97 km) |
| Hirson to Onnaing | 38.72 mi (62.32 km) |
| Hirson to Orange | 401.05 mi (645.42 km) |
| Hirson to Orchies | 53.28 mi (85.75 km) |
| Hirson to Orleans | 170.91 mi (275.06 km) |
| Hirson to Orly | 111.44 mi (179.35 km) |
| Hirson to Ormesson-sur-Marne | 104.87 mi (168.77 km) |
| Hirson to Orsay | 120.18 mi (193.41 km) |
| Hirson to Orthez | 500.25 mi (805.07 km) |
