| Cities | Distance |
|---|---|
| Siena to Orthez | 607.09 mi (977.02 km) |
| Siena to Orvault | 685.22 mi (1,102.76 km) |
| Siena to Osny | 594.12 mi (956.14 km) |
| Siena to Ostwald | 401.06 mi (645.44 km) |
| Siena to Ouistreham | 688.47 mi (1,107.98 km) |
| Siena to Oullins | 361.37 mi (581.57 km) |
| Siena to Outreau | 685.04 mi (1,102.47 km) |
| Siena to Oyonnax | 344.34 mi (554.16 km) |
| Siena to Ozoir-la-Ferriere | 560.09 mi (901.38 km) |
| Siena to Pace | 713.40 mi (1,148.10 km) |
| Siena to Palaiseau | 572.94 mi (922.06 km) |
| Siena to Pamiers | 489.38 mi (787.58 km) |
| Siena to Panazol | 522.60 mi (841.05 km) |
| Siena to Pantin | 575.09 mi (925.51 km) |
| Siena to Paray-le-Monial | 413.88 mi (666.08 km) |