| Helmstedt to Kastoria | 943.35 mi (1,518.17 km) |
| Helmstedt to Katerini | 989.54 mi (1,592.51 km) |
| Helmstedt to Keratsini | 1,157.73 mi (1,863.18 km) |
| Helmstedt to Kerkyra | 968.76 mi (1,559.08 km) |
| Helmstedt to Kiato | 1,133.67 mi (1,824.47 km) |
| Helmstedt to Kifisia | 1,155.70 mi (1,859.92 km) |
| Helmstedt to Kilkis | 956.73 mi (1,539.71 km) |
| Helmstedt to Komotini | 1,024.73 mi (1,649.14 km) |
| Helmstedt to Korinthos | 1,142.40 mi (1,838.51 km) |
| Helmstedt to Koropi | 1,168.33 mi (1,880.24 km) |
| Helmstedt to Korydallos | 1,157.55 mi (1,862.90 km) |
| Helmstedt to Kos | 1,322.92 mi (2,129.04 km) |
| Helmstedt to Kozani | 969.28 mi (1,559.91 km) |
| Helmstedt to Lagos | 1,014.54 mi (1,632.75 km) |
| Helmstedt to Lamia | 1,071.04 mi (1,723.67 km) |
