| Penarth to Isny im Allgau | 644.70 mi (1,037.54 km) |
| Penarth to Isselburg | 413.93 mi (666.15 km) |
| Penarth to Issum | 412.55 mi (663.93 km) |
| Penarth to Itzehoe | 557.81 mi (897.71 km) |
| Penarth to Jena | 639.01 mi (1,028.38 km) |
| Penarth to Jever | 488.04 mi (785.43 km) |
| Penarth to Jork | 559.12 mi (899.81 km) |
| Penarth to Juchen | 418.44 mi (673.42 km) |
| Penarth to Julich | 413.93 mi (666.15 km) |
| Penarth to Juterbog | 695.02 mi (1,118.52 km) |
| Penarth to Kaarst | 422.51 mi (679.97 km) |
| Penarth to Kaiserslautern | 500.01 mi (804.68 km) |
| Penarth to Kalkar | 406.52 mi (654.23 km) |
| Penarth to Kall | 426.75 mi (686.79 km) |
| Penarth to Kaltenkirchen | 574.24 mi (924.15 km) |
