| Black Forest to Isny im Allgau | 5,228.35 mi (8,414.22 km) |
| Black Forest to Isselburg | 4,919.03 mi (7,916.41 km) |
| Black Forest to Issum | 4,930.71 mi (7,935.22 km) |
| Black Forest to Itzehoe | 4,920.78 mi (7,919.22 km) |
| Black Forest to Jena | 5,125.17 mi (8,248.16 km) |
| Black Forest to Jever | 4,886.93 mi (7,864.76 km) |
| Black Forest to Jork | 4,943.77 mi (7,956.23 km) |
| Black Forest to Juchen | 4,952.82 mi (7,970.79 km) |
| Black Forest to Julich | 4,956.05 mi (7,976.00 km) |
| Black Forest to Juterbog | 5,120.01 mi (8,239.86 km) |
| Black Forest to Kaarst | 4,951.45 mi (7,968.59 km) |
| Black Forest to Kaiserslautern | 5,070.05 mi (8,159.45 km) |
| Black Forest to Kalkar | 4,917.52 mi (7,913.98 km) |
| Black Forest to Kall | 4,979.10 mi (8,013.09 km) |
| Black Forest to Kaltenkirchen | 4,938.19 mi (7,947.25 km) |
