| Niederkassel to Colchester | 274.65 mi (442.01 km) |
| Niederkassel to Coleford | 421.90 mi (678.98 km) |
| Niederkassel to Colne | 441.38 mi (710.33 km) |
| Niederkassel to Colwyn Bay | 486.41 mi (782.80 km) |
| Niederkassel to Congleton | 425.24 mi (684.36 km) |
| Niederkassel to Conisbrough | 395.25 mi (636.10 km) |
| Niederkassel to Connahs Quay | 459.52 mi (739.53 km) |
| Niederkassel to Consett | 462.61 mi (744.51 km) |
| Niederkassel to Conwy | 491.38 mi (790.80 km) |
| Niederkassel to Cookstown | 632.91 mi (1,018.58 km) |
| Niederkassel to Corby | 350.88 mi (564.69 km) |
| Niederkassel to Corfe Mullen | 395.06 mi (635.79 km) |
| Niederkassel to Corsham | 401.74 mi (646.54 km) |
| Niederkassel to Coseley | 408.15 mi (656.86 km) |
| Niederkassel to Cosham | 353.29 mi (568.57 km) |
