| Harrow on the Hill to Isny im Allgau | 535.11 mi (861.18 km) |
| Harrow on the Hill to Isselburg | 291.65 mi (469.37 km) |
| Harrow on the Hill to Issum | 290.17 mi (466.98 km) |
| Harrow on the Hill to Itzehoe | 442.57 mi (712.25 km) |
| Harrow on the Hill to Jena | 516.80 mi (831.71 km) |
| Harrow on the Hill to Jever | 372.31 mi (599.17 km) |
| Harrow on the Hill to Jork | 441.74 mi (710.92 km) |
| Harrow on the Hill to Juchen | 296.66 mi (477.43 km) |
| Harrow on the Hill to Julich | 292.69 mi (471.04 km) |
| Harrow on the Hill to Juterbog | 573.00 mi (922.15 km) |
| Harrow on the Hill to Kaarst | 300.47 mi (483.56 km) |
| Harrow on the Hill to Kaiserslautern | 384.73 mi (619.16 km) |
| Harrow on the Hill to Kalkar | 284.16 mi (457.32 km) |
| Harrow on the Hill to Kall | 306.89 mi (493.89 km) |
| Harrow on the Hill to Kaltenkirchen | 458.18 mi (737.38 km) |
