| Kastamonu to Karis | 1,361.69 mi (2,191.42 km) |
| Kastamonu to Karkkila | 1,384.12 mi (2,227.53 km) |
| Kastamonu to Kauhajoki | 1,531.01 mi (2,463.92 km) |
| Kastamonu to Kauhava | 1,562.99 mi (2,515.39 km) |
| Kastamonu to Kauniainen | 1,357.39 mi (2,184.50 km) |
| Kastamonu to Kemi | 1,720.87 mi (2,769.48 km) |
| Kastamonu to Kemijarvi | 1,767.57 mi (2,844.62 km) |
| Kastamonu to Kempele | 1,658.67 mi (2,669.36 km) |
| Kastamonu to Kerava | 1,364.98 mi (2,196.73 km) |
| Kastamonu to Keuruu | 1,490.53 mi (2,398.78 km) |
| Kastamonu to Kiiminki | 1,671.37 mi (2,689.81 km) |
| Kastamonu to Kirkkonummi | 1,354.82 mi (2,180.38 km) |
| Kastamonu to Kitee | 1,439.78 mi (2,317.10 km) |
| Kastamonu to Kiuruvesi | 1,565.86 mi (2,520.00 km) |
| Kastamonu to Kivisto | 1,362.98 mi (2,193.50 km) |
