| Cities | Distance |
|---|---|
| Grefrath to Nowy Sacz | 641.11 mi (1,031.77 km) |
| Grefrath to Nowy Targ | 615.02 mi (989.77 km) |
| Grefrath to Nowy Tomysl | 423.28 mi (681.20 km) |
| Grefrath to Nysa | 482.24 mi (776.09 km) |
| Grefrath to Oborniki | 454.41 mi (731.30 km) |
| Grefrath to Oborniki Slaskie | 455.67 mi (733.33 km) |
| Grefrath to Olawa | 475.51 mi (765.26 km) |
| Grefrath to Olecko | 700.26 mi (1,126.96 km) |
| Grefrath to Olesnica | 477.01 mi (767.67 km) |
| Grefrath to Olesno | 524.26 mi (843.71 km) |
| Grefrath to Olkusz | 581.15 mi (935.27 km) |
| Grefrath to Olsztyn | 616.22 mi (991.71 km) |
| Grefrath to Opalenica | 435.02 mi (700.09 km) |
| Grefrath to Opoczno | 600.83 mi (966.94 km) |
| Grefrath to Opole | 505.63 mi (813.74 km) |