| Boppard to Cervello | 667.51 mi (1,074.26 km) |
| Boppard to Cervera | 664.58 mi (1,069.55 km) |
| Boppard to Ceuti | 946.09 mi (1,522.59 km) |
| Boppard to Cheste | 845.03 mi (1,359.94 km) |
| Boppard to Chiclana de la Frontera | 1,174.10 mi (1,889.54 km) |
| Boppard to Chipiona | 1,163.81 mi (1,872.97 km) |
| Boppard to Chiva | 846.37 mi (1,362.09 km) |
| Boppard to Churriana de la Vega | 1,061.45 mi (1,708.24 km) |
| Boppard to Ciempozuelos | 882.37 mi (1,420.04 km) |
| Boppard to Cieza | 939.40 mi (1,511.82 km) |
| Boppard to Cisterniga | 835.97 mi (1,345.36 km) |
| Boppard to Ciudad de Melilla | 1,160.37 mi (1,867.44 km) |
| Boppard to Ciudad Real | 959.08 mi (1,543.49 km) |
| Boppard to Ciudad-Rodrigo | 952.40 mi (1,532.74 km) |
| Boppard to Cocentaina | 885.66 mi (1,425.33 km) |
