| Welwyn Garden City to Klaukkala | 1,118.96 mi (1,800.80 km) |
| Welwyn Garden City to Kokkola | 1,182.04 mi (1,902.32 km) |
| Welwyn Garden City to Kontiolahti | 1,334.19 mi (2,147.18 km) |
| Welwyn Garden City to Korsholm | 1,116.85 mi (1,797.40 km) |
| Welwyn Garden City to Kotka | 1,191.44 mi (1,917.44 km) |
| Welwyn Garden City to Kouvola | 1,192.73 mi (1,919.52 km) |
| Welwyn Garden City to Kuhmo | 1,360.75 mi (2,189.91 km) |
| Welwyn Garden City to Kuopio | 1,274.08 mi (2,050.43 km) |
| Welwyn Garden City to Kurikka | 1,117.41 mi (1,798.30 km) |
| Welwyn Garden City to Kuusamo | 1,410.05 mi (2,269.26 km) |
| Welwyn Garden City to Kuusankoski | 1,191.11 mi (1,916.91 km) |
| Welwyn Garden City to Lahti | 1,162.34 mi (1,870.61 km) |
| Welwyn Garden City to Laitila | 1,038.65 mi (1,671.55 km) |
| Welwyn Garden City to Lapinlahti | 1,279.47 mi (2,059.10 km) |
| Welwyn Garden City to Lappeenranta | 1,244.10 mi (2,002.19 km) |
