| Heerlen to Isny im Allgau | 286.33 mi (460.80 km) |
| Heerlen to Isselburg | 68.86 mi (110.82 km) |
| Heerlen to Issum | 49.14 mi (79.09 km) |
| Heerlen to Itzehoe | 257.51 mi (414.42 km) |
| Heerlen to Jena | 244.08 mi (392.80 km) |
| Heerlen to Jever | 202.85 mi (326.46 km) |
| Heerlen to Jork | 240.92 mi (387.72 km) |
| Heerlen to Juchen | 27.11 mi (43.62 km) |
| Heerlen to Julich | 16.56 mi (26.65 km) |
| Heerlen to Juterbog | 314.69 mi (506.44 km) |
| Heerlen to Kaarst | 35.88 mi (57.75 km) |
| Heerlen to Kaiserslautern | 126.98 mi (204.35 km) |
| Heerlen to Kalkar | 60.61 mi (97.54 km) |
| Heerlen to Kall | 33.84 mi (54.46 km) |
| Heerlen to Kaltenkirchen | 264.27 mi (425.30 km) |
