| Isernia to Kalisz | 724.59 mi (1,166.11 km) |
| Isernia to Kamien Pomorski | 854.84 mi (1,375.74 km) |
| Isernia to Kamienna Gora | 640.03 mi (1,030.03 km) |
| Isernia to Karczew | 795.43 mi (1,280.12 km) |
| Isernia to Kartuzy | 898.10 mi (1,445.36 km) |
| Isernia to Katowice | 640.78 mi (1,031.23 km) |
| Isernia to Kedzierzyn-Kozle | 633.34 mi (1,019.27 km) |
| Isernia to Kepno | 691.96 mi (1,113.60 km) |
| Isernia to Ketrzyn | 922.62 mi (1,484.81 km) |
| Isernia to Kety | 621.12 mi (999.59 km) |
| Isernia to Kielce | 709.08 mi (1,141.15 km) |
| Isernia to Kielczow | 673.58 mi (1,084.02 km) |
| Isernia to Klobuck | 681.11 mi (1,096.14 km) |
| Isernia to Klodzko | 620.90 mi (999.24 km) |
| Isernia to Kluczbork | 675.11 mi (1,086.48 km) |
