| Cities | Distance |
|---|---|
| Sierning to Oria | 546.46 mi (879.44 km) |
| Sierning to Oristano | 629.70 mi (1,013.41 km) |
| Sierning to Orta Nova | 468.94 mi (754.69 km) |
| Sierning to Orte | 396.99 mi (638.90 km) |
| Sierning to Ortona | 393.49 mi (633.26 km) |
| Sierning to Orvieto | 383.14 mi (616.61 km) |
| Sierning to Orzinuovi | 276.26 mi (444.60 km) |
| Sierning to Osimo | 317.67 mi (511.23 km) |
| Sierning to Ospitaletto | 264.01 mi (424.88 km) |
| Sierning to Ostuni | 530.26 mi (853.37 km) |
| Sierning to Ottaviano | 497.17 mi (800.12 km) |
| Sierning to Ovada | 358.08 mi (576.27 km) |
| Sierning to Ozieri | 578.00 mi (930.21 km) |
| Sierning to Paceco | 700.79 mi (1,127.81 km) |
| Sierning to Pachino | 783.71 mi (1,261.27 km) |