| Castel San Pietro Terme to Karis | 1,192.97 mi (1,919.89 km) |
| Castel San Pietro Terme to Karkkila | 1,230.13 mi (1,979.70 km) |
| Castel San Pietro Terme to Kauhajoki | 1,316.08 mi (2,118.03 km) |
| Castel San Pietro Terme to Kauhava | 1,369.70 mi (2,204.31 km) |
| Castel San Pietro Terme to Kauniainen | 1,220.72 mi (1,964.56 km) |
| Castel San Pietro Terme to Kemi | 1,553.77 mi (2,500.55 km) |
| Castel San Pietro Terme to Kemijarvi | 1,650.28 mi (2,655.86 km) |
| Castel San Pietro Terme to Kempele | 1,514.66 mi (2,437.62 km) |
| Castel San Pietro Terme to Kerava | 1,238.16 mi (1,992.62 km) |
| Castel San Pietro Terme to Keuruu | 1,341.51 mi (2,158.96 km) |
| Castel San Pietro Terme to Kiiminki | 1,531.79 mi (2,465.18 km) |
| Castel San Pietro Terme to Kirkkonummi | 1,209.08 mi (1,945.83 km) |
| Castel San Pietro Terme to Kitee | 1,431.93 mi (2,304.47 km) |
| Castel San Pietro Terme to Kiuruvesi | 1,454.77 mi (2,341.22 km) |
| Castel San Pietro Terme to Kivisto | 1,229.02 mi (1,977.91 km) |
