| Thornton Heath to Isny im Allgau | 521.47 mi (839.23 km) |
| Thornton Heath to Isselburg | 283.57 mi (456.37 km) |
| Thornton Heath to Issum | 281.22 mi (452.58 km) |
| Thornton Heath to Itzehoe | 438.99 mi (706.49 km) |
| Thornton Heath to Jena | 507.22 mi (816.30 km) |
| Thornton Heath to Jever | 368.68 mi (593.33 km) |
| Thornton Heath to Jork | 437.25 mi (703.69 km) |
| Thornton Heath to Juchen | 286.52 mi (461.11 km) |
| Thornton Heath to Julich | 282.06 mi (453.93 km) |
| Thornton Heath to Juterbog | 565.21 mi (909.61 km) |
| Thornton Heath to Kaarst | 290.65 mi (467.76 km) |
| Thornton Heath to Kaiserslautern | 371.93 mi (598.56 km) |
| Thornton Heath to Kalkar | 275.81 mi (443.87 km) |
| Thornton Heath to Kall | 295.46 mi (475.50 km) |
| Thornton Heath to Kaltenkirchen | 454.25 mi (731.04 km) |
