| Southborough to Karis | 1,091.92 mi (1,757.27 km) |
| Southborough to Karkkila | 1,122.31 mi (1,806.19 km) |
| Southborough to Kauhajoki | 1,127.17 mi (1,814.01 km) |
| Southborough to Kauhava | 1,176.14 mi (1,892.81 km) |
| Southborough to Kauniainen | 1,129.74 mi (1,818.14 km) |
| Southborough to Kemi | 1,319.27 mi (2,123.16 km) |
| Southborough to Kemijarvi | 1,423.83 mi (2,291.44 km) |
| Southborough to Kempele | 1,307.66 mi (2,104.48 km) |
| Southborough to Kerava | 1,146.20 mi (1,844.63 km) |
| Southborough to Keuruu | 1,190.35 mi (1,915.69 km) |
| Southborough to Kiiminki | 1,322.72 mi (2,128.71 km) |
| Southborough to Kirkkonummi | 1,117.03 mi (1,797.68 km) |
| Southborough to Kitee | 1,344.89 mi (2,164.39 km) |
| Southborough to Kiuruvesi | 1,289.60 mi (2,075.42 km) |
| Southborough to Kivisto | 1,136.13 mi (1,828.43 km) |
