| Boppard to Ciampino | 629.82 mi (1,013.60 km) |
| Boppard to Cicciano | 722.03 mi (1,161.99 km) |
| Boppard to Cingoli | 543.48 mi (874.64 km) |
| Boppard to Cinisello Balsamo | 332.09 mi (534.44 km) |
| Boppard to Cinisi | 876.50 mi (1,410.60 km) |
| Boppard to Cirie | 345.20 mi (555.54 km) |
| Boppard to Ciro Marina | 882.61 mi (1,420.43 km) |
| Boppard to Cislago | 322.87 mi (519.61 km) |
| Boppard to Cisterna di Latina | 647.52 mi (1,042.09 km) |
| Boppard to Cisternino | 809.68 mi (1,303.06 km) |
| Boppard to Citta di Castello | 516.65 mi (831.47 km) |
| Boppard to Citta Sant'Angelo | 615.03 mi (989.80 km) |
| Boppard to Cittadella | 371.15 mi (597.31 km) |
| Boppard to Cittanova | 920.72 mi (1,481.76 km) |
| Boppard to Cividale del Friuli | 392.16 mi (631.12 km) |
