| Boppard to Kocaeli | 1,256.48 mi (2,022.11 km) |
| Boppard to Konak | 1,257.59 mi (2,023.89 km) |
| Boppard to Konakli | 1,529.56 mi (2,461.58 km) |
| Boppard to Konya | 1,491.20 mi (2,399.85 km) |
| Boppard to Koprukoy | 1,795.74 mi (2,889.96 km) |
| Boppard to Korfez | 1,248.08 mi (2,008.59 km) |
| Boppard to Korkut | 1,841.82 mi (2,964.12 km) |
| Boppard to Kose | 1,690.14 mi (2,720.01 km) |
| Boppard to Kovancilar | 1,760.14 mi (2,832.68 km) |
| Boppard to Koyulhisar | 1,607.84 mi (2,587.57 km) |
| Boppard to Kozan | 1,644.97 mi (2,647.32 km) |
| Boppard to Kozlu | 1,304.13 mi (2,098.80 km) |
| Boppard to Kozluk | 1,852.00 mi (2,980.51 km) |
| Boppard to Kucuk Dalyan | 1,717.40 mi (2,763.89 km) |
| Boppard to Kucukcekmece | 1,200.80 mi (1,932.50 km) |
