| Duzce to Karis | 1,366.84 mi (2,199.72 km) |
| Duzce to Karkkila | 1,392.25 mi (2,240.61 km) |
| Duzce to Kauhajoki | 1,537.24 mi (2,473.94 km) |
| Duzce to Kauhava | 1,573.13 mi (2,531.71 km) |
| Duzce to Kauniainen | 1,366.57 mi (2,199.28 km) |
| Duzce to Kemi | 1,739.28 mi (2,799.10 km) |
| Duzce to Kemijarvi | 1,793.51 mi (2,886.38 km) |
| Duzce to Kempele | 1,678.19 mi (2,700.79 km) |
| Duzce to Kerava | 1,375.81 mi (2,214.16 km) |
| Duzce to Keuruu | 1,503.72 mi (2,420.01 km) |
| Duzce to Kiiminki | 1,691.84 mi (2,722.75 km) |
| Duzce to Kirkkonummi | 1,362.68 mi (2,193.03 km) |
| Duzce to Kitee | 1,469.42 mi (2,364.81 km) |
| Duzce to Kiuruvesi | 1,586.63 mi (2,553.44 km) |
| Duzce to Kivisto | 1,372.77 mi (2,209.27 km) |
