| Castalla to Isny im Allgau | 826.93 mi (1,330.81 km) |
| Castalla to Isselburg | 977.15 mi (1,572.57 km) |
| Castalla to Issum | 957.78 mi (1,541.40 km) |
| Castalla to Itzehoe | 1,162.79 mi (1,871.33 km) |
| Castalla to Jena | 1,039.80 mi (1,673.40 km) |
| Castalla to Jever | 1,111.49 mi (1,788.77 km) |
| Castalla to Jork | 1,142.48 mi (1,838.64 km) |
| Castalla to Juchen | 931.59 mi (1,499.25 km) |
| Castalla to Julich | 917.75 mi (1,476.98 km) |
| Castalla to Juterbog | 1,137.37 mi (1,830.42 km) |
| Castalla to Kaarst | 940.93 mi (1,514.28 km) |
| Castalla to Kaiserslautern | 857.59 mi (1,380.16 km) |
| Castalla to Kalkar | 968.23 mi (1,558.22 km) |
| Castalla to Kall | 898.04 mi (1,445.26 km) |
| Castalla to Kaltenkirchen | 1,166.45 mi (1,877.21 km) |
