| Welwyn Garden City to Kanjiza | 996.45 mi (1,603.64 km) |
| Welwyn Garden City to Kikinda | 1,021.23 mi (1,643.52 km) |
| Welwyn Garden City to Kladovo | 1,155.41 mi (1,859.45 km) |
| Welwyn Garden City to Knic | 1,106.36 mi (1,780.51 km) |
| Welwyn Garden City to Knjazevac | 1,192.27 mi (1,918.78 km) |
| Welwyn Garden City to Koceljeva | 1,047.37 mi (1,685.57 km) |
| Welwyn Garden City to Kosjeric | 1,071.15 mi (1,723.85 km) |
| Welwyn Garden City to Kovacica | 1,054.95 mi (1,697.78 km) |
| Welwyn Garden City to Kovin | 1,082.90 mi (1,742.76 km) |
| Welwyn Garden City to Kragujevac | 1,111.23 mi (1,788.34 km) |
| Welwyn Garden City to Kraljevo | 1,113.25 mi (1,791.60 km) |
| Welwyn Garden City to Krupanj | 1,034.14 mi (1,664.28 km) |
| Welwyn Garden City to Krusevac | 1,144.54 mi (1,841.96 km) |
| Welwyn Garden City to Kucevo | 1,121.72 mi (1,805.23 km) |
| Welwyn Garden City to Kula | 992.27 mi (1,596.90 km) |
