| Boppard to Karis | 925.15 mi (1,488.89 km) |
| Boppard to Karkkila | 960.28 mi (1,545.42 km) |
| Boppard to Kauhajoki | 1,006.25 mi (1,619.40 km) |
| Boppard to Kauhava | 1,059.64 mi (1,705.32 km) |
| Boppard to Kauniainen | 960.07 mi (1,545.08 km) |
| Boppard to Kemi | 1,229.48 mi (1,978.66 km) |
| Boppard to Kemijarvi | 1,332.55 mi (2,144.53 km) |
| Boppard to Kempele | 1,202.80 mi (1,935.72 km) |
| Boppard to Kerava | 977.76 mi (1,573.56 km) |
| Boppard to Keuruu | 1,052.58 mi (1,693.97 km) |
| Boppard to Kiiminki | 1,219.41 mi (1,962.44 km) |
| Boppard to Kirkkonummi | 947.25 mi (1,524.45 km) |
| Boppard to Kitee | 1,182.05 mi (1,902.33 km) |
| Boppard to Kiuruvesi | 1,162.54 mi (1,870.93 km) |
| Boppard to Kivisto | 967.66 mi (1,557.30 km) |
