| Welwyn Garden City to Karis | 1,076.44 mi (1,732.36 km) |
| Welwyn Garden City to Karkkila | 1,105.90 mi (1,779.77 km) |
| Welwyn Garden City to Kauhajoki | 1,104.76 mi (1,777.94 km) |
| Welwyn Garden City to Kauhava | 1,152.81 mi (1,855.27 km) |
| Welwyn Garden City to Kauniainen | 1,114.45 mi (1,793.53 km) |
| Welwyn Garden City to Kemi | 1,291.70 mi (2,078.79 km) |
| Welwyn Garden City to Kemijarvi | 1,396.02 mi (2,246.68 km) |
| Welwyn Garden City to Kempele | 1,282.09 mi (2,063.33 km) |
| Welwyn Garden City to Kerava | 1,130.61 mi (1,819.55 km) |
| Welwyn Garden City to Keuruu | 1,169.92 mi (1,882.80 km) |
| Welwyn Garden City to Kiiminki | 1,296.87 mi (2,087.11 km) |
| Welwyn Garden City to Kirkkonummi | 1,101.84 mi (1,773.24 km) |
| Welwyn Garden City to Kitee | 1,327.36 mi (2,136.17 km) |
| Welwyn Garden City to Kiuruvesi | 1,267.12 mi (2,039.23 km) |
| Welwyn Garden City to Kivisto | 1,120.62 mi (1,803.46 km) |
