| Triel-sur-Seine to Oria | 962.03 mi (1,548.24 km) |
| Triel-sur-Seine to Oristano | 705.53 mi (1,135.44 km) |
| Triel-sur-Seine to Orta Nova | 849.44 mi (1,367.04 km) |
| Triel-sur-Seine to Orte | 672.46 mi (1,082.22 km) |
| Triel-sur-Seine to Ortona | 752.11 mi (1,210.40 km) |
| Triel-sur-Seine to Orvieto | 649.92 mi (1,045.94 km) |
| Triel-sur-Seine to Orzinuovi | 446.57 mi (718.69 km) |
| Triel-sur-Seine to Osimo | 666.09 mi (1,071.96 km) |
| Triel-sur-Seine to Ospitaletto | 445.82 mi (717.47 km) |
| Triel-sur-Seine to Ostuni | 949.22 mi (1,527.63 km) |
| Triel-sur-Seine to Ottaviano | 827.48 mi (1,331.70 km) |
| Triel-sur-Seine to Ovada | 433.96 mi (698.39 km) |
| Triel-sur-Seine to Ozieri | 673.32 mi (1,083.61 km) |
| Triel-sur-Seine to Paceco | 923.71 mi (1,486.57 km) |
| Triel-sur-Seine to Pachino | 1,072.87 mi (1,726.62 km) |
