| Niederkassel to Castelli Calepio | 381.60 mi (614.12 km) |
| Niederkassel to Castelnovo ne' Monti | 467.96 mi (753.10 km) |
| Niederkassel to Castelnuovo Berardenga | 557.04 mi (896.47 km) |
| Niederkassel to Castelnuovo di Porto | 653.48 mi (1,051.67 km) |
| Niederkassel to Castelnuovo di Verona | 409.74 mi (659.42 km) |
| Niederkassel to Castelnuovo Rangone | 469.29 mi (755.24 km) |
| Niederkassel to Castelvetrano | 950.41 mi (1,529.54 km) |
| Niederkassel to Castelvetro di Modena | 472.80 mi (760.90 km) |
| Niederkassel to Castenaso | 482.00 mi (775.70 km) |
| Niederkassel to Castenedolo | 398.76 mi (641.74 km) |
| Niederkassel to Castiglion Fiorentino | 564.87 mi (909.07 km) |
| Niederkassel to Castiglione del Lago | 580.45 mi (934.15 km) |
| Niederkassel to Castiglione delle Stiviere | 406.88 mi (654.82 km) |
| Niederkassel to Castrolibero | 910.24 mi (1,464.89 km) |
| Niederkassel to Castrovillari | 879.37 mi (1,415.21 km) |
