| Grefrath to Cassino | 766.69 mi (1,233.86 km) |
| Grefrath to Castagneto Carducci | 598.50 mi (963.20 km) |
| Grefrath to Castano Primo | 414.91 mi (667.73 km) |
| Grefrath to Castel Bolognese | 546.77 mi (879.95 km) |
| Grefrath to Castel Gandolfo | 726.63 mi (1,169.39 km) |
| Grefrath to Castel Goffredo | 458.22 mi (737.44 km) |
| Grefrath to Castel Maggiore | 522.07 mi (840.18 km) |
| Grefrath to Castel Mella | 439.30 mi (706.99 km) |
| Grefrath to Castel San Giorgio | 830.78 mi (1,337.01 km) |
| Grefrath to Castel San Giovanni | 456.99 mi (735.46 km) |
| Grefrath to Castel San Pietro Terme | 537.00 mi (864.22 km) |
| Grefrath to Castel Volturno | 796.74 mi (1,282.24 km) |
| Grefrath to Castelbuono | 1,000.20 mi (1,609.66 km) |
| Grefrath to Casteldaccia | 982.46 mi (1,581.12 km) |
| Grefrath to Castelfidardo | 639.14 mi (1,028.59 km) |
