| Radviliskis to Karditsa | 1,137.90 mi (1,831.27 km) |
| Radviliskis to Kastoria | 1,061.06 mi (1,707.61 km) |
| Radviliskis to Katerini | 1,074.31 mi (1,728.94 km) |
| Radviliskis to Keratsini | 1,232.17 mi (1,982.98 km) |
| Radviliskis to Kerkyra | 1,129.93 mi (1,818.44 km) |
| Radviliskis to Kiato | 1,229.72 mi (1,979.04 km) |
| Radviliskis to Kifisia | 1,224.17 mi (1,970.11 km) |
| Radviliskis to Kilkis | 1,024.20 mi (1,648.29 km) |
| Radviliskis to Komotini | 1,019.17 mi (1,640.20 km) |
| Radviliskis to Korinthos | 1,234.44 mi (1,986.64 km) |
| Radviliskis to Koropi | 1,236.86 mi (1,990.54 km) |
| Radviliskis to Korydallos | 1,231.02 mi (1,981.14 km) |
| Radviliskis to Kos | 1,320.60 mi (2,125.30 km) |
| Radviliskis to Kozani | 1,073.96 mi (1,728.37 km) |
| Radviliskis to Lagos | 1,020.16 mi (1,641.78 km) |
