| Formia to Karis | 1,368.10 mi (2,201.74 km) |
| Formia to Karkkila | 1,404.93 mi (2,261.02 km) |
| Formia to Kauhajoki | 1,504.31 mi (2,420.96 km) |
| Formia to Kauhava | 1,556.92 mi (2,505.62 km) |
| Formia to Kauniainen | 1,392.20 mi (2,240.52 km) |
| Formia to Kemi | 1,743.61 mi (2,806.07 km) |
| Formia to Kemijarvi | 1,836.03 mi (2,954.80 km) |
| Formia to Kempele | 1,700.01 mi (2,735.90 km) |
| Formia to Kerava | 1,408.99 mi (2,267.56 km) |
| Formia to Keuruu | 1,520.97 mi (2,447.76 km) |
| Formia to Kiiminki | 1,717.07 mi (2,763.36 km) |
| Formia to Kirkkonummi | 1,381.38 mi (2,223.12 km) |
| Formia to Kitee | 1,593.18 mi (2,563.97 km) |
| Formia to Kiuruvesi | 1,633.14 mi (2,628.28 km) |
| Formia to Kivisto | 1,400.51 mi (2,253.91 km) |
