| Grefrath to Castelli Calepio | 426.29 mi (686.05 km) |
| Grefrath to Castelnovo ne' Monti | 512.49 mi (824.78 km) |
| Grefrath to Castelnuovo Berardenga | 602.23 mi (969.19 km) |
| Grefrath to Castelnuovo di Porto | 698.96 mi (1,124.87 km) |
| Grefrath to Castelnuovo di Verona | 455.42 mi (732.93 km) |
| Grefrath to Castelnuovo Rangone | 514.56 mi (828.11 km) |
| Grefrath to Castelvetrano | 994.50 mi (1,600.49 km) |
| Grefrath to Castelvetro di Modena | 518.07 mi (833.75 km) |
| Grefrath to Castenaso | 527.78 mi (849.39 km) |
| Grefrath to Castenedolo | 443.90 mi (714.38 km) |
| Grefrath to Castiglion Fiorentino | 610.43 mi (982.40 km) |
| Grefrath to Castiglione del Lago | 626.03 mi (1,007.49 km) |
| Grefrath to Castiglione delle Stiviere | 452.23 mi (727.80 km) |
| Grefrath to Castrolibero | 956.74 mi (1,539.72 km) |
| Grefrath to Castrovillari | 925.96 mi (1,490.19 km) |
