| Selargius to Octeville | 891.23 mi (1,434.30 km) |
| Selargius to Oignies | 830.97 mi (1,337.32 km) |
| Selargius to Oissel | 802.10 mi (1,290.85 km) |
| Selargius to Olivet | 696.45 mi (1,120.83 km) |
| Selargius to Ollioules | 318.93 mi (513.27 km) |
| Selargius to Olonne-sur-Mer | 746.69 mi (1,201.68 km) |
| Selargius to Oloron-Sainte-Marie | 575.47 mi (926.12 km) |
| Selargius to Onet Village | 488.69 mi (786.46 km) |
| Selargius to Onnaing | 815.58 mi (1,312.55 km) |
| Selargius to Orange | 405.18 mi (652.08 km) |
| Selargius to Orchies | 827.00 mi (1,330.93 km) |
| Selargius to Orleans | 698.45 mi (1,124.04 km) |
| Selargius to Orly | 736.24 mi (1,184.87 km) |
| Selargius to Ormesson-sur-Marne | 735.53 mi (1,183.73 km) |
| Selargius to Orsay | 738.19 mi (1,188.00 km) |
