| Castelo Branco to Isny im Allgau | 1,027.08 mi (1,652.92 km) |
| Castelo Branco to Isselburg | 1,064.63 mi (1,713.36 km) |
| Castelo Branco to Issum | 1,048.85 mi (1,687.97 km) |
| Castelo Branco to Itzehoe | 1,256.69 mi (2,022.44 km) |
| Castelo Branco to Jena | 1,196.87 mi (1,926.18 km) |
| Castelo Branco to Jever | 1,193.02 mi (1,919.98 km) |
| Castelo Branco to Jork | 1,243.08 mi (2,000.55 km) |
| Castelo Branco to Juchen | 1,030.09 mi (1,657.76 km) |
| Castelo Branco to Julich | 1,017.04 mi (1,636.77 km) |
| Castelo Branco to Juterbog | 1,290.44 mi (2,076.77 km) |
| Castelo Branco to Kaarst | 1,039.21 mi (1,672.45 km) |
| Castelo Branco to Kaiserslautern | 999.67 mi (1,608.81 km) |
| Castelo Branco to Kalkar | 1,054.77 mi (1,697.49 km) |
| Castelo Branco to Kall | 1,005.67 mi (1,618.47 km) |
| Castelo Branco to Kaltenkirchen | 1,265.78 mi (2,037.07 km) |
