| Sieradz to Glyka Nera | 972.29 mi (1,564.75 km) |
| Sieradz to Grevena | 805.83 mi (1,296.86 km) |
| Sieradz to Ialysos | 1,146.14 mi (1,844.53 km) |
| Sieradz to Ilion | 967.68 mi (1,557.33 km) |
| Sieradz to Ilioupoli | 975.02 mi (1,569.15 km) |
| Sieradz to Ioannina | 830.86 mi (1,337.14 km) |
| Sieradz to Irakleio | 1,167.04 mi (1,878.17 km) |
| Sieradz to Irakleio | 967.37 mi (1,556.83 km) |
| Sieradz to Kaisariani | 972.77 mi (1,565.52 km) |
| Sieradz to Kalamaria | 786.99 mi (1,266.54 km) |
| Sieradz to Kalamata | 1,019.49 mi (1,640.71 km) |
| Sieradz to Kallithea | 973.29 mi (1,566.37 km) |
| Sieradz to Kalymnos | 1,086.84 mi (1,749.11 km) |
| Sieradz to Kalyvia Thorikou | 983.80 mi (1,583.27 km) |
| Sieradz to Kamatero | 966.05 mi (1,554.70 km) |
