| Boppard to Catania | 954.51 mi (1,536.13 km) |
| Boppard to Catanzaro | 898.29 mi (1,445.66 km) |
| Boppard to Cattolica | 495.56 mi (797.52 km) |
| Boppard to Cava de' Tirreni | 742.41 mi (1,194.79 km) |
| Boppard to Cavallino | 855.74 mi (1,377.18 km) |
| Boppard to Cavarzere | 409.13 mi (658.43 km) |
| Boppard to Cave | 634.98 mi (1,021.90 km) |
| Boppard to Cavriago | 406.06 mi (653.49 km) |
| Boppard to Cavriglia | 498.86 mi (802.84 km) |
| Boppard to Cazzago San Martino | 340.43 mi (547.88 km) |
| Boppard to Ceccano | 658.79 mi (1,060.23 km) |
| Boppard to Cecina | 497.31 mi (800.35 km) |
| Boppard to Cefalu | 900.19 mi (1,448.72 km) |
| Boppard to Ceglie Messapico | 816.42 mi (1,313.89 km) |
| Boppard to Celano | 630.57 mi (1,014.81 km) |
