| Niederkassel to Cologno al Serio | 381.81 mi (614.47 km) |
| Niederkassel to Cologno Monzese | 379.69 mi (611.04 km) |
| Niederkassel to Colorno | 435.02 mi (700.10 km) |
| Niederkassel to Comacchio | 485.34 mi (781.09 km) |
| Niederkassel to Comiso | 1,028.21 mi (1,654.74 km) |
| Niederkassel to Como | 358.50 mi (576.95 km) |
| Niederkassel to Concordia Sagittaria | 439.31 mi (707.00 km) |
| Niederkassel to Concorezzo | 376.34 mi (605.67 km) |
| Niederkassel to Conegliano | 417.43 mi (671.80 km) |
| Niederkassel to Conselice | 488.99 mi (786.95 km) |
| Niederkassel to Conselve | 445.54 mi (717.03 km) |
| Niederkassel to Conversano | 834.01 mi (1,342.21 km) |
| Niederkassel to Copertino | 901.00 mi (1,450.03 km) |
| Niederkassel to Copparo | 465.21 mi (748.68 km) |
| Niederkassel to Corato | 803.78 mi (1,293.57 km) |
