| Piraeus to Karis | 1,528.88 mi (2,460.50 km) |
| Piraeus to Karkkila | 1,561.04 mi (2,512.24 km) |
| Piraeus to Kauhajoki | 1,693.16 mi (2,724.88 km) |
| Piraeus to Kauhava | 1,738.35 mi (2,797.60 km) |
| Piraeus to Kauniainen | 1,539.70 mi (2,477.91 km) |
| Piraeus to Kemi | 1,920.67 mi (3,091.02 km) |
| Piraeus to Kemijarvi | 1,993.66 mi (3,208.48 km) |
| Piraeus to Kempele | 1,864.95 mi (3,001.35 km) |
| Piraeus to Kerava | 1,552.93 mi (2,499.19 km) |
| Piraeus to Keuruu | 1,680.63 mi (2,704.71 km) |
| Piraeus to Kiiminki | 1,880.65 mi (3,026.61 km) |
| Piraeus to Kirkkonummi | 1,532.43 mi (2,466.20 km) |
| Piraeus to Kitee | 1,691.79 mi (2,722.68 km) |
| Piraeus to Kiuruvesi | 1,780.47 mi (2,865.38 km) |
| Piraeus to Kivisto | 1,547.24 mi (2,490.04 km) |
