| Seia to Sycow | 1,425.07 mi (2,293.43 km) |
| Seia to Szamotuly | 1,417.47 mi (2,281.20 km) |
| Seia to Szczecin | 1,371.84 mi (2,207.76 km) |
| Seia to Szczecinek | 1,457.27 mi (2,345.24 km) |
| Seia to Szczytno | 1,611.25 mi (2,593.06 km) |
| Seia to Szprotawa | 1,345.92 mi (2,166.05 km) |
| Seia to Sztum | 1,548.78 mi (2,492.52 km) |
| Seia to Szubin | 1,473.91 mi (2,372.04 km) |
| Seia to Szydlowiec | 1,550.49 mi (2,495.27 km) |
| Seia to Tarnobrzeg | 1,572.69 mi (2,531.00 km) |
| Seia to Tarnow | 1,532.96 mi (2,467.05 km) |
| Seia to Tarnowskie Gory | 1,451.04 mi (2,335.22 km) |
| Seia to Tczew | 1,545.28 mi (2,486.89 km) |
| Seia to Tomaszow Lubelski | 1,644.37 mi (2,646.36 km) |
| Seia to Tomaszow Mazowiecki | 1,522.59 mi (2,450.37 km) |
