| Piazza Armerina to Octeville | 1,161.15 mi (1,868.69 km) |
| Piazza Armerina to Oignies | 1,063.96 mi (1,712.27 km) |
| Piazza Armerina to Oissel | 1,058.54 mi (1,703.55 km) |
| Piazza Armerina to Olivet | 959.87 mi (1,544.76 km) |
| Piazza Armerina to Ollioules | 599.39 mi (964.63 km) |
| Piazza Armerina to Olonne-sur-Mer | 1,039.47 mi (1,672.86 km) |
| Piazza Armerina to Oloron-Sainte-Marie | 883.63 mi (1,422.06 km) |
| Piazza Armerina to Onet Village | 780.37 mi (1,255.88 km) |
| Piazza Armerina to Onnaing | 1,043.95 mi (1,680.07 km) |
| Piazza Armerina to Orange | 683.23 mi (1,099.56 km) |
| Piazza Armerina to Orchies | 1,057.82 mi (1,702.39 km) |
| Piazza Armerina to Orleans | 961.46 mi (1,547.32 km) |
| Piazza Armerina to Orly | 988.18 mi (1,590.33 km) |
| Piazza Armerina to Ormesson-sur-Marne | 985.95 mi (1,586.73 km) |
| Piazza Armerina to Orsay | 992.13 mi (1,596.67 km) |
