| Castelo Branco to Karis | 1,935.28 mi (3,114.53 km) |
| Castelo Branco to Karkkila | 1,968.35 mi (3,167.76 km) |
| Castelo Branco to Kauhajoki | 1,988.52 mi (3,200.21 km) |
| Castelo Branco to Kauhava | 2,038.94 mi (3,281.35 km) |
| Castelo Branco to Kauniainen | 1,971.94 mi (3,173.53 km) |
| Castelo Branco to Kemi | 2,186.86 mi (3,519.41 km) |
| Castelo Branco to Kemijarvi | 2,291.52 mi (3,687.85 km) |
| Castelo Branco to Kempele | 2,173.46 mi (3,497.84 km) |
| Castelo Branco to Kerava | 1,989.21 mi (3,201.32 km) |
| Castelo Branco to Keuruu | 2,047.13 mi (3,294.53 km) |
| Castelo Branco to Kiiminki | 2,188.81 mi (3,522.55 km) |
| Castelo Branco to Kirkkonummi | 1,959.05 mi (3,152.79 km) |
| Castelo Branco to Kitee | 2,192.31 mi (3,528.18 km) |
| Castelo Branco to Kiuruvesi | 2,150.46 mi (3,460.82 km) |
| Castelo Branco to Kivisto | 1,979.03 mi (3,184.94 km) |
