| Cities | Distance |
|---|---|
| Sion to Orbetello | 323.69 mi (520.93 km) |
| Sion to Oria | 649.38 mi (1,045.08 km) |
| Sion to Oristano | 441.52 mi (710.56 km) |
| Sion to Orta Nova | 536.16 mi (862.87 km) |
| Sion to Orte | 359.67 mi (578.83 km) |
| Sion to Ortona | 439.01 mi (706.52 km) |
| Sion to Orvieto | 337.04 mi (542.41 km) |
| Sion to Orzinuovi | 136.34 mi (219.42 km) |
| Sion to Osimo | 354.59 mi (570.66 km) |
| Sion to Ospitaletto | 138.32 mi (222.60 km) |
| Sion to Ostuni | 636.92 mi (1,025.02 km) |
| Sion to Ottaviano | 514.55 mi (828.08 km) |
| Sion to Ovada | 126.41 mi (203.44 km) |
| Sion to Ozieri | 398.79 mi (641.80 km) |
| Sion to Paceco | 628.55 mi (1,011.55 km) |