| Grefrath to Skarzysko-Kamienna | 629.83 mi (1,013.62 km) |
| Grefrath to Skawina | 597.44 mi (961.48 km) |
| Grefrath to Skierniewice | 592.68 mi (953.83 km) |
| Grefrath to Skoczow | 555.75 mi (894.40 km) |
| Grefrath to Skwierzyna | 399.25 mi (642.53 km) |
| Grefrath to Slawno | 478.50 mi (770.08 km) |
| Grefrath to Slubice | 357.85 mi (575.90 km) |
| Grefrath to Slupca | 496.22 mi (798.59 km) |
| Grefrath to Slupsk | 494.48 mi (795.79 km) |
| Grefrath to Sochaczew | 596.09 mi (959.32 km) |
| Grefrath to Sokolka | 735.91 mi (1,184.33 km) |
| Grefrath to Sokolow Podlaski | 681.30 mi (1,096.45 km) |
| Grefrath to Solec Kujawski | 517.11 mi (832.21 km) |
| Grefrath to Sopot | 552.25 mi (888.76 km) |
| Grefrath to Sosnowiec | 562.50 mi (905.26 km) |
