| Boppard to Cay | 1,399.15 mi (2,251.71 km) |
| Boppard to Caybasi | 1,547.70 mi (2,490.78 km) |
| Boppard to Caycuma | 1,318.07 mi (2,121.24 km) |
| Boppard to Cayeli | 1,702.86 mi (2,740.48 km) |
| Boppard to Cayiralan | 1,556.30 mi (2,504.62 km) |
| Boppard to Cayirhan | 1,357.48 mi (2,184.65 km) |
| Boppard to Cayirli | 1,722.91 mi (2,772.75 km) |
| Boppard to Cayirova | 1,231.63 mi (1,982.11 km) |
| Boppard to Caykara | 1,694.82 mi (2,727.56 km) |
| Boppard to Cekerek | 1,517.65 mi (2,442.42 km) |
| Boppard to Cekme | 1,214.53 mi (1,954.60 km) |
| Boppard to Celtik | 1,409.76 mi (2,268.79 km) |
| Boppard to Cerkes | 1,377.32 mi (2,216.58 km) |
| Boppard to Cerkezkoy | 1,156.17 mi (1,860.68 km) |
| Boppard to Cermik | 1,767.25 mi (2,844.11 km) |
