| Saint-Sebastien-sur-Loire to Oria | 1,056.28 mi (1,699.92 km) |
| Saint-Sebastien-sur-Loire to Oristano | 712.99 mi (1,147.45 km) |
| Saint-Sebastien-sur-Loire to Orta Nova | 940.76 mi (1,514.00 km) |
| Saint-Sebastien-sur-Loire to Orte | 753.95 mi (1,213.37 km) |
| Saint-Sebastien-sur-Loire to Ortona | 847.05 mi (1,363.19 km) |
| Saint-Sebastien-sur-Loire to Orvieto | 732.87 mi (1,179.45 km) |
| Saint-Sebastien-sur-Loire to Orzinuovi | 559.36 mi (900.20 km) |
| Saint-Sebastien-sur-Loire to Osimo | 770.35 mi (1,239.76 km) |
| Saint-Sebastien-sur-Loire to Ospitaletto | 562.83 mi (905.79 km) |
| Saint-Sebastien-sur-Loire to Ostuni | 1,045.51 mi (1,682.58 km) |
| Saint-Sebastien-sur-Loire to Ottaviano | 904.79 mi (1,456.12 km) |
| Saint-Sebastien-sur-Loire to Ovada | 518.55 mi (834.53 km) |
| Saint-Sebastien-sur-Loire to Ozieri | 693.85 mi (1,116.65 km) |
| Saint-Sebastien-sur-Loire to Paceco | 954.96 mi (1,536.86 km) |
| Saint-Sebastien-sur-Loire to Pachino | 1,115.20 mi (1,794.75 km) |
