| Grefrath to Rybnik | 540.51 mi (869.86 km) |
| Grefrath to Ryki | 669.92 mi (1,078.13 km) |
| Grefrath to Rypin | 566.99 mi (912.49 km) |
| Grefrath to Rzeszow | 690.04 mi (1,110.52 km) |
| Grefrath to Sandomierz | 670.16 mi (1,078.51 km) |
| Grefrath to Sanok | 707.92 mi (1,139.29 km) |
| Grefrath to Sedziszow Malopolski | 676.56 mi (1,088.82 km) |
| Grefrath to Sepolno Krajenskie | 493.26 mi (793.82 km) |
| Grefrath to Sidlice | 552.04 mi (888.42 km) |
| Grefrath to Siechnice | 468.25 mi (753.58 km) |
| Grefrath to Siedlce | 682.44 mi (1,098.28 km) |
| Grefrath to Siemianowice Slaskie | 556.25 mi (895.20 km) |
| Grefrath to Siemiatycze | 707.11 mi (1,137.98 km) |
| Grefrath to Sieradz | 533.78 mi (859.04 km) |
| Grefrath to Sierpc | 574.60 mi (924.73 km) |
