| Sieradz to Oerlinghausen | 431.39 mi (694.26 km) |
| Sieradz to Oestrich-Winkel | 481.80 mi (775.38 km) |
| Sieradz to Offenburg | 525.95 mi (846.43 km) |
| Sieradz to Oftersheim | 472.22 mi (759.96 km) |
| Sieradz to Ohrdruf | 350.88 mi (564.69 km) |
| Sieradz to Ohringen | 439.45 mi (707.23 km) |
| Sieradz to Olbernhau | 243.48 mi (391.84 km) |
| Sieradz to Olching | 405.42 mi (652.47 km) |
| Sieradz to Oldenburg | 456.61 mi (734.85 km) |
| Sieradz to Oldenburg in Holstein | 376.59 mi (606.06 km) |
| Sieradz to Olfen | 486.77 mi (783.39 km) |
| Sieradz to Olpe | 472.79 mi (760.88 km) |
| Sieradz to Olsberg | 441.80 mi (711.01 km) |
| Sieradz to Oranienburg | 246.75 mi (397.11 km) |
| Sieradz to Ortenberg | 430.07 mi (692.14 km) |
